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The document summarizes the anatomy of the eyelid. It discusses that the eyelid is made up of thin skin that protects the eye. It features eyelashes that protect from debris and has glands that secrete tears to keep the eye moist. The eyelid is divided into an orbital and tarsal part by a furrow. It covers part of the cornea and touches the limbus when open. The eyelids meet at the medial and lateral angles. The document outlines the layers that make up the eyelid including skin, muscle layers, connective tissue layers, conjunctiva and blood supply.
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Anatomy Of The Eyelids
With a knowledge of anatomy, diseases of eyelids cannot be dealt with. Here we submit our presentation on anatomy of eyelids which will be helpful to all ophthalmogists, and students.
Anatomy and physiology of eyelid asif
This document describes the anatomy and function of the eyelids. It discusses the layers that make up the eyelid, including skin, muscles like the orbicularis oculi and levator palpebrae superioris, and connective tissues. It also mentions the glands in the eyelid like meibomian and lacrimal glands. The document explains functions of eyelid muscles in blinking and how Bell's phenomenon provides a protective response.
Anatomy of the eyelids
The eyelid is a thin fold of skin that covers and protects the eye. It assists in distributing tears and draining them from the eye. The upper eyelid extends from the eyebrow down and forms the upper boundary of the palpebral fissure, while the lower eyelid merges with the cheek. Each eyelid has skin, muscle, and glandular layers. When closed, the upper eyelid covers about 2mm of the cornea while the lower lid just touches the cornea.
Eye lids
The eyelids act as protective shutters for the eyes. They spread tears across the cornea and conjunctiva to keep the eyes moist. When closed, the eyelids also help drain tears via the lacrimal pump system. The eyelids are composed of several layers including skin, muscle fibers, and conjunctiva. Structures like the tarsal plates provide shape and firmness to the lids. Glands such as the meibomian glands secrete oils to form the outer layer of the tear film and prevent evaporation of tears. Contraction of the orbicularis muscle aids in eyelid closure and tear drainage.
Anat of eyelid
The eyelids are mobile curtains that protect the eyes from injuries and excessive light. They help spread tears over the cornea and conjunctiva and drain tears via the lacrimal pump system. The eyelids have several layers including skin, muscle, fibrous tissue, and conjunctiva. They contain glands such as the Meibomian glands that secrete oils to form part of the tear film. Blood supply comes from the superior and inferior arterial arcades, and nerves innervate motor and sensory functions including facial and trigeminal branches.
Anatomy of the eyelids
The eyelids have several anatomical structures that protect and lubricate the eye. Each eyelid is divided into an orbital and tarsal part by a horizontal furrow. When open, the upper lid covers about 1/6 of the cornea and the lower lid touches the limbus. The elliptical space between the lids is called the palpebral fissure. The lids meet at the medial and lateral canthi. The medial canthus contains the caruncula lacrimalis and puncta which aid in draining tears from the eye. Short curved eyelashes cover the lid margins to protect the eye.
Eyelids and lacrimal apparatus
Eyelids are movable folds that protect the eyeball. They are formed by the orbital septum, which contains fatty tissue and attaches to the periosteum and tarsal plates. The tarsal plates are dense bands that contain meibomian glands. Eyelids have an external skin layer and internal palpebral conjunctiva layer. The conjunctiva reflects onto the eyeball and forms the fornices. Eyelid movement is controlled by the orbicularis oculi and levator palpebrae muscles. The lacrimal apparatus includes the lacus lacrimalis, caruncula, papillae, and puncta which drain tears through the canaliculi into the
Anatomy of Eyelids & Its Clinical Correlations
This document provides an overview of the anatomy of the eyelids. It discusses the layers of the eyelids from front to back including skin, muscles like the orbicularis oculi and levator palpebrae superioris, the fibrous tarsal plates, and conjunctiva. It also covers the nerve and blood supply, functions of eyelid structures like blinking and tear distribution, and some clinical correlations like entropion and dermatochalasis.
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Anatomy Of The Eyelids
With a knowledge of anatomy, diseases of eyelids cannot be dealt with. Here we submit our presentation on anatomy of eyelids which will be helpful to all ophthalmogists, and students.
Anatomy and physiology of eyelid asif
This document describes the anatomy and function of the eyelids. It discusses the layers that make up the eyelid, including skin, muscles like the orbicularis oculi and levator palpebrae superioris, and connective tissues. It also mentions the glands in the eyelid like meibomian and lacrimal glands. The document explains functions of eyelid muscles in blinking and how Bell's phenomenon provides a protective response.
Anatomy of the eyelids
The eyelid is a thin fold of skin that covers and protects the eye. It assists in distributing tears and draining them from the eye. The upper eyelid extends from the eyebrow down and forms the upper boundary of the palpebral fissure, while the lower eyelid merges with the cheek. Each eyelid has skin, muscle, and glandular layers. When closed, the upper eyelid covers about 2mm of the cornea while the lower lid just touches the cornea.
Eye lids
The eyelids act as protective shutters for the eyes. They spread tears across the cornea and conjunctiva to keep the eyes moist. When closed, the eyelids also help drain tears via the lacrimal pump system. The eyelids are composed of several layers including skin, muscle fibers, and conjunctiva. Structures like the tarsal plates provide shape and firmness to the lids. Glands such as the meibomian glands secrete oils to form the outer layer of the tear film and prevent evaporation of tears. Contraction of the orbicularis muscle aids in eyelid closure and tear drainage.
Anat of eyelid
The eyelids are mobile curtains that protect the eyes from injuries and excessive light. They help spread tears over the cornea and conjunctiva and drain tears via the lacrimal pump system. The eyelids have several layers including skin, muscle, fibrous tissue, and conjunctiva. They contain glands such as the Meibomian glands that secrete oils to form part of the tear film. Blood supply comes from the superior and inferior arterial arcades, and nerves innervate motor and sensory functions including facial and trigeminal branches.
Anatomy of the eyelids
The eyelids have several anatomical structures that protect and lubricate the eye. Each eyelid is divided into an orbital and tarsal part by a horizontal furrow. When open, the upper lid covers about 1/6 of the cornea and the lower lid touches the limbus. The elliptical space between the lids is called the palpebral fissure. The lids meet at the medial and lateral canthi. The medial canthus contains the caruncula lacrimalis and puncta which aid in draining tears from the eye. Short curved eyelashes cover the lid margins to protect the eye.
Eyelids and lacrimal apparatus
Eyelids are movable folds that protect the eyeball. They are formed by the orbital septum, which contains fatty tissue and attaches to the periosteum and tarsal plates. The tarsal plates are dense bands that contain meibomian glands. Eyelids have an external skin layer and internal palpebral conjunctiva layer. The conjunctiva reflects onto the eyeball and forms the fornices. Eyelid movement is controlled by the orbicularis oculi and levator palpebrae muscles. The lacrimal apparatus includes the lacus lacrimalis, caruncula, papillae, and puncta which drain tears through the canaliculi into the
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This document provides an overview of the anatomy of the eyelids. It discusses the layers of the eyelids from front to back including skin, muscles like the orbicularis oculi and levator palpebrae superioris, the fibrous tarsal plates, and conjunctiva. It also covers the nerve and blood supply, functions of eyelid structures like blinking and tear distribution, and some clinical correlations like entropion and dermatochalasis.
Anatomy of Eyelids
The eyelids have several layers including skin, muscle, and glands. The orbicularis oculi muscle closes the eyelids. The tarsal plates provide structure and the septum orbitale divides tissue planes. Glands include meibomian, Zeis, and Moll glands which lubricate the eyelids. Blood vessels and nerves pierce the septum orbitale. Lymphatics drain via superficial and deep plexuses.
Eyelid anatomy and physiology
The eyelids are composed of several layers including skin, muscle, orbital septum, fat and conjunctiva. The upper eyelid is raised by the levator palpebrae superioris muscle and Muller's muscle. The lower eyelid is retracted by the capsulopalpebral fascia. Several glands including the meibomian glands and glands of Zeis and Moll are located within the eyelids and help form the tear film. The orbicularis oculi muscle allows for eyelid closure and blinking. Together, the eyelid structures protect the eye and help spread tears across the surface of the eye.
Anatomy of the eyelids
anatomy of the eye lids. by Dr.Vaibhav.K
post graduate in ophthalmology
navodaya medical college raichur
Anatomy of Eyelids
The eyelids have six structural layers and act to protect the eye from injury. The outermost layers are skin and muscle including the orbicularis oculi muscle for blinking. Deeper layers include the Muller's muscle to raise the eyelid, fibrous tarsal plates for structure, and inner conjunctiva membrane. Together, the eyelid layers help spread tears, regulate light entry, and protect the front of the eye.
Anatomy of eyelid
IT CONTAINS ANATOMY OF EYELID, STRUCTURE OF EYELID, GLANDS OF EYELID, NERVE AND BLOOD SUPPLY OF EYELID
eyelid
The document provides information on the anatomy of the eyelids, including their layers, nerves, blood supply, functions, and clinical correlations. The eyelids have several layers including skin, muscle, fibrous tissue and conjunctiva. They are supplied by nerves from the facial and trigeminal nerves and blood vessels from the ophthalmic artery. The eyelids have glands that secrete oils to form the tear film and protect the eye. Clinically, disorders of the eyelids or their nerves can cause issues like ptosis, entropion or exophthalmos.
Anatomy of eyelid
The three sentences are:
The eyelids are multilamellar structures that cover and protect the eyeball. They assist in distributing tears and providing protection from excessive light, dryness, and particles. The anatomy of the eyelid includes skin, muscles like the orbicularis oculi and levator palpebrae superioris, glands, blood vessels, and nerves that allow it to perform functions like blinking and maintaining the tear film.
Anatomy & physiology of eyelids
The document summarizes the anatomy and physiology of the eyelids. It describes the main parts of the eyelids including the palpebral aperture, lid margin, tarsal plate, conjunctiva and glands. It discusses the layers of the eyelids from anterior to posterior including the skin, subcutaneous tissue, muscle and conjunctiva layers. It also summarizes the blood supply, nerves and functions of the eyelids.
eyelid anatomy slideshare
The eyelids are composed of several layers of tissue and perform important protective and lubricating functions for the eyes. They contain glands that secrete oils to form the outer layer of the tear film and help spread tears across the cornea. The eyelids are innervated by cranial nerves and contain muscles that open and close the palpebral fissure, protecting the eyes from damage and keeping them moist.
Anatomy of the eyelids
The eyelids develop from the frontonasal and maxillary processes during embryogenesis. They contain skin, muscle, fibrous tissue and glands that work together to protect the eye. The orbicularis oculi muscle helps with blinking while the levator palpebrae superioris muscle elevates the upper eyelid. The tarsal plates provide structure and the meibomian glands secrete oils to form the tear film. Blood vessels from the internal and external carotid arteries provide a rich blood supply to support the eyelids' functions.
Anatomy of eyelids
The eyelids are thin folds of skin that cover and protect the eyes. They have several important anatomical structures:
- The tarsal plates provide structure and support to the eyelids. The levator palpebrae superioris muscle elevates the upper eyelid.
- Several glands are located within the eyelid tissues, including the meibomian glands within the tarsal plates and glands of Zeis and Moll near the eyelashes.
- Blood supply comes from the superior and inferior palpebral arteries. Nerves pass through the septum orbitale to innervate the eyelid structures.
The eyelid
The eyelids are thin folds of skin that protect the eye. They have three main functions - protection, regulation, and maintenance. The eyelids develop from embryonic processes and have several layers including skin, muscle, orbital fat, and conjunctiva. They are supplied by nerves from the oculomotor, trigeminal, and facial cranial nerves as well as the sympathetic nervous system. The eyelids help to spread tears and protect the eyes.
Eyelid anatomy & lacrimal pump physiology
The document summarizes eyelid anatomy and physiology of the lacrimal pump. It describes the embryology, gross anatomy, structures, muscles, glands, blood supply and lymphatic drainage of the eyelids. The key structures discussed include the tarsal plates, septum orbitale, orbicularis oculi muscle, levator palpebrae superioris muscle, and meibomian glands. The document also briefly outlines the functions of the meibomian glands and arterial blood supply to the eyelids.
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Lacrimal apparatus, eye lid and external features of eye ball.
describes structure and layers of eyelid, components of lacrimal apparatus and general features of eyeball.
Anatomy of lacrimal apparatus and conjunctiva
The lacrimal apparatus includes the lacrimal gland, puncta, canaliculi, sac, and nasolacrimal duct. The main lacrimal gland secretes tears into the superior and inferior fornices via ducts. Tears drain through the puncta and canaliculi into the lacrimal sac and nasolacrimal duct and into the nose. The conjunctiva lines the posterior eyelid and anterior globe. It has palpebral and bulbar regions composed of epithelium, adenoid layer, and fibrous layers that lubricate the eye and prevent microbial entry.
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The orbital region contains the eyeballs and associated structures. The orbits are bony cavities that contain the eyeballs, muscles, nerves, vessels and fat. Each orbit is a pyramidal cavity with openings that transmit nerves and vessels. The eyeball consists of three coats - fibrous, vascular and nervous - that contain the aqueous humor, vitreous body and lens. Muscles allow movement of the eyeball and eyelids to focus vision.
Anatomy of Eyelid
The three main structures of the eyelid are the skin, orbicularis oculi muscle, and tarsal plate. The orbicularis oculi muscle is responsible for eyelid closure and blinking. Below the muscle sits the tarsal plate, a dense fibrous structure that provides structure to the eyelid. In the upper eyelid, the levator palpebrae superioris and Müller muscle act as retractors to open the eyelid. The document describes the anatomy and structures of the eyelid in detail.
Lacrimal system ppt.
The lacrimal apparatus is the physiological system containing the orbital structures for tear production and drainage. It consists of: The lacrimal gland, which secretes the tears, and its excretory ducts, which convey the fluid to the surface of the human eye;it is a serous gland located in lacrimal fossa.
Anatomyofeyelid by dr.junaid shaikh
The eyelid is a thin fold of skin that covers and protects the eye. It has the thinnest skin of the body and features eyelashes to protect the eye from debris and perspiration. Each eyelid is divided into an orbital and tarsal part and contains muscles like the orbicularis oculi and levator palpebrae superioris that open and close the eyelid. The eyelid receives blood supply from the lacrimal and ophthalmic arteries and innervation from the facial, oculomotor, and trigeminal nerves.
Eyelid Anatomy.pptx
This document provides an overview of the anatomy of the eyelids. It discusses the embryology, layers, muscles, glands, functions, nerve and blood supply of the eyelids. The eyelids are formed during gestation from the surface ectoderm. Each eyelid has skin, connective tissue, striated muscle layers and a tarsal plate. The document describes the anatomy and functions of the orbicularis muscle and levator palpebrae superioris muscle. It provides details on the glands, blood and nerve supply of the eyelids.
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The eyelids have several layers including skin, muscle, and glands. The orbicularis oculi muscle closes the eyelids. The tarsal plates provide structure and the septum orbitale divides tissue planes. Glands include meibomian, Zeis, and Moll glands which lubricate the eyelids. Blood vessels and nerves pierce the septum orbitale. Lymphatics drain via superficial and deep plexuses.
Eyelid anatomy and physiology
The eyelids are composed of several layers including skin, muscle, orbital septum, fat and conjunctiva. The upper eyelid is raised by the levator palpebrae superioris muscle and Muller's muscle. The lower eyelid is retracted by the capsulopalpebral fascia. Several glands including the meibomian glands and glands of Zeis and Moll are located within the eyelids and help form the tear film. The orbicularis oculi muscle allows for eyelid closure and blinking. Together, the eyelid structures protect the eye and help spread tears across the surface of the eye.
Anatomy of the eyelids
anatomy of the eye lids. by Dr.Vaibhav.K
post graduate in ophthalmology
navodaya medical college raichur
Anatomy of Eyelids
The eyelids have six structural layers and act to protect the eye from injury. The outermost layers are skin and muscle including the orbicularis oculi muscle for blinking. Deeper layers include the Muller's muscle to raise the eyelid, fibrous tarsal plates for structure, and inner conjunctiva membrane. Together, the eyelid layers help spread tears, regulate light entry, and protect the front of the eye.
Anatomy of eyelid
IT CONTAINS ANATOMY OF EYELID, STRUCTURE OF EYELID, GLANDS OF EYELID, NERVE AND BLOOD SUPPLY OF EYELID
eyelid
The document provides information on the anatomy of the eyelids, including their layers, nerves, blood supply, functions, and clinical correlations. The eyelids have several layers including skin, muscle, fibrous tissue and conjunctiva. They are supplied by nerves from the facial and trigeminal nerves and blood vessels from the ophthalmic artery. The eyelids have glands that secrete oils to form the tear film and protect the eye. Clinically, disorders of the eyelids or their nerves can cause issues like ptosis, entropion or exophthalmos.
Anatomy of eyelid
The three sentences are:
The eyelids are multilamellar structures that cover and protect the eyeball. They assist in distributing tears and providing protection from excessive light, dryness, and particles. The anatomy of the eyelid includes skin, muscles like the orbicularis oculi and levator palpebrae superioris, glands, blood vessels, and nerves that allow it to perform functions like blinking and maintaining the tear film.
Anatomy & physiology of eyelids
The document summarizes the anatomy and physiology of the eyelids. It describes the main parts of the eyelids including the palpebral aperture, lid margin, tarsal plate, conjunctiva and glands. It discusses the layers of the eyelids from anterior to posterior including the skin, subcutaneous tissue, muscle and conjunctiva layers. It also summarizes the blood supply, nerves and functions of the eyelids.
eyelid anatomy slideshare
The eyelids are composed of several layers of tissue and perform important protective and lubricating functions for the eyes. They contain glands that secrete oils to form the outer layer of the tear film and help spread tears across the cornea. The eyelids are innervated by cranial nerves and contain muscles that open and close the palpebral fissure, protecting the eyes from damage and keeping them moist.
Anatomy of the eyelids
The eyelids develop from the frontonasal and maxillary processes during embryogenesis. They contain skin, muscle, fibrous tissue and glands that work together to protect the eye. The orbicularis oculi muscle helps with blinking while the levator palpebrae superioris muscle elevates the upper eyelid. The tarsal plates provide structure and the meibomian glands secrete oils to form the tear film. Blood vessels from the internal and external carotid arteries provide a rich blood supply to support the eyelids' functions.
Anatomy of eyelids
The eyelids are thin folds of skin that cover and protect the eyes. They have several important anatomical structures:
- The tarsal plates provide structure and support to the eyelids. The levator palpebrae superioris muscle elevates the upper eyelid.
- Several glands are located within the eyelid tissues, including the meibomian glands within the tarsal plates and glands of Zeis and Moll near the eyelashes.
- Blood supply comes from the superior and inferior palpebral arteries. Nerves pass through the septum orbitale to innervate the eyelid structures.
The eyelid
The eyelids are thin folds of skin that protect the eye. They have three main functions - protection, regulation, and maintenance. The eyelids develop from embryonic processes and have several layers including skin, muscle, orbital fat, and conjunctiva. They are supplied by nerves from the oculomotor, trigeminal, and facial cranial nerves as well as the sympathetic nervous system. The eyelids help to spread tears and protect the eyes.
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The document summarizes eyelid anatomy and physiology of the lacrimal pump. It describes the embryology, gross anatomy, structures, muscles, glands, blood supply and lymphatic drainage of the eyelids. The key structures discussed include the tarsal plates, septum orbitale, orbicularis oculi muscle, levator palpebrae superioris muscle, and meibomian glands. The document also briefly outlines the functions of the meibomian glands and arterial blood supply to the eyelids.
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The document discusses the anatomy of the eye and its relevance to squint. It describes the various muscles of the eye including the recti muscles, oblique muscles, and involuntary muscles. It then discusses the gross anatomy including the blood supply and innervation of the eye muscles. It provides details on the tenon's capsule, rectus muscle pulley system, check ligaments, and suspensory ligament of Lockwood. It also describes the surgical anatomy of the inferior oblique, superior oblique, and trochlear components.
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describes structure and layers of eyelid, components of lacrimal apparatus and general features of eyeball.
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The lacrimal apparatus includes the lacrimal gland, puncta, canaliculi, sac, and nasolacrimal duct. The main lacrimal gland secretes tears into the superior and inferior fornices via ducts. Tears drain through the puncta and canaliculi into the lacrimal sac and nasolacrimal duct and into the nose. The conjunctiva lines the posterior eyelid and anterior globe. It has palpebral and bulbar regions composed of epithelium, adenoid layer, and fibrous layers that lubricate the eye and prevent microbial entry.
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This document summarizes the glands and vasculature of the conjunctiva. There are three main types of glands - mucin secretory glands, accessory lacrimal glands, and goblet cells. The mucin glands include globlet cells, Henle's glands, and glands of Manz. The accessory lacrimal glands include glands of Krause, glands of Wolffring, and rudimentary accessory lacrimal glands. The conjunctiva receives blood supply from the marginal arterial arcade, peripheral arterial arcade, and anterior ciliary arteries. Lymphatic drainage is to the periauricular and submandibular lymph nodes. Nerve supply
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The orbital region contains the eyeballs and associated structures. The orbits are bony cavities that contain the eyeballs, muscles, nerves, vessels and fat. Each orbit is a pyramidal cavity with openings that transmit nerves and vessels. The eyeball consists of three coats - fibrous, vascular and nervous - that contain the aqueous humor, vitreous body and lens. Muscles allow movement of the eyeball and eyelids to focus vision.
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The three main structures of the eyelid are the skin, orbicularis oculi muscle, and tarsal plate. The orbicularis oculi muscle is responsible for eyelid closure and blinking. Below the muscle sits the tarsal plate, a dense fibrous structure that provides structure to the eyelid. In the upper eyelid, the levator palpebrae superioris and Müller muscle act as retractors to open the eyelid. The document describes the anatomy and structures of the eyelid in detail.
Lacrimal system ppt.
The lacrimal apparatus is the physiological system containing the orbital structures for tear production and drainage. It consists of: The lacrimal gland, which secretes the tears, and its excretory ducts, which convey the fluid to the surface of the human eye;it is a serous gland located in lacrimal fossa.
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Anatomyofeyelid by dr.junaid shaikh
The eyelid is a thin fold of skin that covers and protects the eye. It has the thinnest skin of the body and features eyelashes to protect the eye from debris and perspiration. Each eyelid is divided into an orbital and tarsal part and contains muscles like the orbicularis oculi and levator palpebrae superioris that open and close the eyelid. The eyelid receives blood supply from the lacrimal and ophthalmic arteries and innervation from the facial, oculomotor, and trigeminal nerves.
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This document provides an overview of the anatomy of the eyelids. It begins with the embryological development of the eyelids, followed by a description of the layers that make up the eyelid including skin, muscle, fibrous tissue and mucous membrane. The document then discusses the anatomy and functions of specific structures like the tarsal plate, orbicularis oculi muscle, levator palpebrae superioris muscle, and glandular structures. Common congenital anomalies and clinical conditions involving the eyelids are also mentioned.
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The upper and lower eyelids are composed of similar layers from the skin on the outside to the conjunctiva lining on the inside. Between the eyelids is the palpebral fissure. Key structures include the orbicularis oculi muscle which closes the eyelids, the tarsal plates which provide support, and the meibomian glands within the tarsal plates which secrete oils to prevent tear evaporation. The levator palpebrae superioris muscle in the upper eyelid opens the eyelid under control of the oculomotor nerve. When closed, the eyelids and their conjunctival lining form a protective sac over the eye.
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This document provides an overview of the anatomy and embryology of the lacrimal apparatus. It describes the secretory and drainage portions, including the main and accessory lacrimal glands, puncta, canaliculi, lacrimal sac, and nasolacrimal duct. Details are given on histology, blood supply, innervation and functions. The structure and layers of the tear film are explained. The dynamic process of tear secretion, formation, distribution, evaporation and drainage is summarized.
Eye anatomy
to download this presentation from this link
https://mohmmed-ink.blogspot.com/2020/12/anatomy-of-eye.html
Eye anatomy
Anatomy of the eyelids
The document provides an anatomy overview of the eyelids. It discusses the key structures of the eyelids including the orbicularis oculi muscle, levator palpebrae superioris muscle, tarsal plates, septum orbitale, canthi, caruncle, plica semilunaris, and eyelid margins. The document also describes the layers of the eyelid from skin to conjunctiva and the position and function of the eyelids.
ocular anatomy
The eye is remarkable sense organ that reacts to light and allows vision.The eye is made up of three coats, or layers, enclosing various anatomical structures. The outermost layer, known as the fibrous tunic, is composed of the cornea and sclera. The middle layer, known as the vascular tunic or uvea, consists of the choroid, ciliary body, pigmented epithelium and iris. The innermost is the retina, which gets its oxygenation from the blood vessels of the choroid (posteriorly) as well as the retinal vessels (anteriorly).
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The uveal tract consists of the iris, ciliary body, and choroid. The iris is the anterior part that forms the pupil and divides the eye into anterior and posterior chambers. It has two layers of epithelium derived from neuroectoderm and stroma from mesoderm. The ciliary body is a ring behind the iris that secretes aqueous humor. It has two layers of epithelium, connective tissue stroma, and the ciliary muscle. The choroid is the highly vascular layer between the sclera and retina that nourishes the outer retina. It has three layers including numerous blood vessels and pigmented cells that absorb light.
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The document provides an anatomy overview of the eyelids in 3 paragraphs:
1) The eyelids are mobile tissue curtains placed in front of the eyeballs. They regulate light entry and spread tears over the cornea. Embryologically, the upper eyelid develops from the frontonasal process and the lower eyelid from the maxillary process.
2) Gross anatomy details include the extent of the upper and lower eyelids, lid folds, palpebral aperture, eyelid margins containing lashes and puncta, and canthal positions. The orbicularis oculi muscle encircles the eyelids for closure.
3) Structurally, the eyelids have skin, subcutaneous tissue
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Anatomy and physiology of eyelids
Eyelids are two movable folds of skin that protect the eyes. They have several functions including protection from injuries and excessive light as well as secretion of tears. Eyelids are made up of various layers including skin, muscle, and connective tissue. They receive nerve innervation from cranial nerves III, VII, and the sympathetic nervous system to control blinking and eyelid movement. The eyelids have several glands that contribute to tear production and are supplied by branches of the ophthalmic artery. Blinking can occur voluntarily or involuntarily through spontaneous or reflex blinking.
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The document provides an overview of the surgical anatomy of the eyelid. It discusses the key structures of the eyelid in 3 layers - skin, muscle, and fibrous layer. The skin is the thinnest in the body to allow for easy eyelid mobility. The muscle layer contains the orbicularis oculi muscle which helps protract the eyelid. The fibrous layer provides the framework and includes the tarsal plates, septum orbitale, and medial/lateral palpebral ligaments. It also describes important anatomical structures like the palpebral fissure, canthi, eyelid margins and creases. Blood supply comes from the medial and lateral palpebral arteries which form marginal arterial arc
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The uveal tract consists of the iris, ciliary body, and choroid, which provide nutrients and immune function to the eye. Anterior uveitis is inflammation of the iris and anterior ciliary body that causes redness, pain, photophobia, and cellular deposits on the cornea. It can result from infection, autoimmune diseases like HLA-B27, trauma, or be idiopathic. Examination reveals cells in the aqueous humor, keratic precipitates, iris abnormalities, and posterior synechiae adhesions between the iris and lens.
Eye vision
The document summarizes the anatomy and functional structures of the eye and related areas. It describes the three layers that make up the eyeball - outer, middle, and inner layers. The outer layer includes the cornea and sclera. The middle layer contains the choroid, ciliary body, and iris. The inner layer is the retina, which contains the light-sensitive photoreceptor cells and forms the visual image. Other structures discussed include the eyelids, lacrimal gland, conjunctiva, and orbital cavity.
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The document provides details on the anatomy of the orbit and its contents. It discusses the seven bones that form the orbit, its four walls, base and apex. It describes the structures contained within the orbit including the eyeball, extraocular muscles, nerves and vessels. The optic canal and superior orbital fissure which pass through the apex of the orbit are also mentioned. The document summarizes the anatomy of the orbit in detail.
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The lacrimal apparatus produces and drains tears from the eye. It consists of the lacrimal gland, puncta, canaliculi, lacrimal sac, and nasolacrimal duct. The main lacrimal gland secretes tears and has orbital and palpebral parts connected by ducts. Tears drain through the puncta and canaliculi into the lacrimal sac, then through the nasolacrimal duct into the nose. Accessory glands also contribute to tear production. The passages are lined by epithelium and contain vessels, nerves and connective tissue.
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The eyeball contains three layers - the outer fibrous tunic, middle vascular tunic, and inner nervous tunic. The fibrous tunic includes the sclera and transparent cornea. The middle vascular tunic (uvea) contains the choroid, ciliary body, and iris. The inner nervous tunic is the retina. Accessory structures include the eyelids, lacrimal apparatus, conjunctiva, and extraocular muscles. The interior of the eyeball is divided into the anterior and posterior chambers by the lens, filled with aqueous humor and vitreous humor respectively.
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Electrocardiogram_20240614_173859_0000.pdf
Basics of Electrocardiogram
CONTENTS
●Conduction System of the Heart
●What is ECG or EKG?
●ECG Leads
●Normal waves of ECG.
●Dimensions of ECG.
● Abnormalities of ECG
CONDUCTION SYSTEM OF THE HEART
ECG:
●ECG is a graphic record of the electrical activity of the heart.
●Electrical activity precedes the mechanical activity of the heart.
●Electrical activity has two phases:
Depolarization- contraction of muscle
Repolarization- relaxation of muscle
ECG Leads:
●6 Chest leads
●6 Limb leads
1. Bipolar Limb Leads:
Lead 1- Between right arm(-ve) and left arm(+ve)
Lead 2- Between right arm(-ve) and left leg(+ve)
Lead 3- Between left arm(-ve)
and left leg(+ve)
2. Augmented unipolar Limb Leads:
AvR- Right arm
AvL- Left arm
AvF- Left leg
3.Chest Leads:
V1 : Over 4th intercostal
space near right sternal margin
V2: Over 4th intercostal space near left sternal margin
V3:In between V2 and V4
V4:Over left 5th intercostal space on the mid
clavicular line
V5:Over left 5th intercostal space on the anterior
axillary line
V6:Over left 5th intercostal space on the mid
axillary line.
Normal ECG:
Waves of ECG:
P Wave
•P Wave is a positive wave and the first wave in ECG.
•It is also called as atrial complex.
Cause: Atrial depolarisation
Duration: 0.1 sec
QRS Complex:
•QRS’ complex is also called the initial ventricular complex.
•‘Q’ wave is a small negative wave. It is continued as the tall ‘R’ wave, which is a positive wave.
‘R’ wave is followed by a small negative wave, the ‘S’ wave.
Cause:Ventricular depolarization and atrial repolarization
Duration: 0.08- 0.10 sec
T Wave:
•‘T’ wave is the final ventricular complex and is a positive wave.
Cause:Ventricular repolarization Duration: 0.2 sec
Intervals and Segments of ECG:
P-R Interval:
•‘P-R’ interval is the interval
between the onset of ‘P’wave and onset of ‘Q’ wave.
•‘P-R’ interval cause atrial depolarization and conduction of impulses through AV node.
Duration:0.18 (0.12 to 0.2) sec
Q-T Interval:
•‘Q-T’ interval is the interval between the onset of ‘Q’
wave and the end of ‘T’ wave.
•‘Q-T’ interval indicates the ventricular depolarization
and ventricular repolarization,
i.e. it signifies the
electrical activity in ventricles.
Duration:0.4-0.42sec
S-T Segment:
•‘S-T’ segment is the time interval between the end of ‘S’ wave and the onset of ‘T’ wave.
Duration: 0.08 sec
R-R Interval:
•‘R-R’ interval is the time interval between two consecutive ‘R’ waves.
•It signifies the duration of one cardiac cycle.
Duration: 0.8 sec
Dimension of ECG:
How to find heart rhytm of the heart?
Regular rhytm:
Irregular rhytm:
More than or less than 4
How to find heart rate using ECG?
If heart Rhytm is Regular :
Heart rate =
300/No.of large b/w 2 QRS complex
= 300/4
=75 beats/mins
How to find heart rate using ECG?
If heart Rhytm is irregular:
Heart rate = 10×No.of QRS complex in 6 sec 5large box = 1sec
5×6=30
10×7 = 70 Beats/min
Abnormalities of ECG:
Cardiac Arrythmias:
1.Tachycardia
Heart Rate more than 100 beats/min
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Our company incorporates various drug formulations covering pharma tablets, syrups, capsules, gels, sachets, ointments, creams, injectables.
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This presentation will help to develop in-depth knowledge of the examination of Urine and Faeces.
FACIAL NERVE
The facial nerve, also known as cranial nerve VII, is one of the 12 cranial nerves originating from the brain. It's a mixed nerve, meaning it contains both sensory and motor fibres, and it plays a crucial role in controlling various facial muscles, as well as conveying sensory information from the taste buds on the anterior two-thirds of the tongue.
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Certain chemicals, such as phthalates and parabens, can disrupt the body's hormones and have significant effects on health. According to data, hormone-related health issues such as uterine fibroids, infertility, early puberty and more aggressive forms of breast and endometrial cancers disproportionately affect Black women. Our guest speaker, Jasmine A. McDonald, PhD, an Assistant Professor in the Department of Epidemiology at Columbia University in New York City, discusses the scientific reasons why Black women should pay attention to specific chemicals in their personal care products, like hair care, and ways to minimize their exposure.
The Ultimate Guide in Setting Up Market Research System in Health-Tech
How to effectively start market research in the health tech industry by defining objectives, crafting problem statements, selecting methods, identifying data collection sources, and setting clear timelines. This guide covers all the preliminary steps needed to lay a strong foundation for your research.
"Market Research it too text-booky, I am in the market for a decade, I am living research book" this is what the founder I met on the event claimed, few of my colleagues rolled their eyes. Its true that one cannot over look the real life experience, but one cannot out beat structured gold mine of market research.
Many 0 to 1 startup founders often overlook market research, but this critical step can make or break a venture, especially in health tech.
But Why do they skip it?
Limited resources—time, money, and manpower—are common culprits.
"In fact, a survey by CB Insights found that 42% of startups fail due to no market need, which is like building a spaceship to Mars only to realise you forgot the fuel."
Sudharsan Srinivasan
Operational Partner Pitchworks VC Studio
Overconfidence in their product’s success leads founders to assume it will naturally find its market, especially in health tech where patient needs, entire system issues and regulatory requirements are as complex as trying to perform brain surgery with a butter knife. Additionally, the pressure to launch quickly and the belief in their own intuition further contribute to this oversight. Yet, thorough market research in health tech could be the key to transforming a startup's vision into a life-saving reality, instead of a medical mishap waiting to happen.
Example of Market Research working
Innovaccer, founded by Abhinav Shashank in 2014, focuses on improving healthcare delivery through data-driven insights and interoperability solutions. Before launching their platform, Innovaccer conducted extensive market research to understand the challenges faced by healthcare organizations and the potential for innovation in healthcare IT.
Identifying Pain Points: Innovaccer surveyed healthcare providers to understand their difficulties with data integration, care coordination, and patient engagement. They found widespread frustration with siloed systems and inefficient workflows.
Competitive Analysis: Analyzed competitors offering similar solutions in healthcare analytics and interoperability. Identified gaps in comprehensive data aggregation, real-time analytics, and actionable insights.
Regulatory Compliance: Ensured their platform complied with HIPAA and other healthcare data privacy regulations. This compliance was crucial to gaining trust from healthcare providers wary of data security issues.
Customer Validation: Conducted pilot programs with several healthcare organizations to validate the platform's effectiveness in improving care outcomes and operational efficiency. Gathered feedback to refine features and user interface.
Health Tech Market Intelligence Prelim Questions -
The Ultimate Guide to Setting up Market Research in Health Tech part -1
How to effectively start market research in the health tech industry by defining objectives, crafting problem statements, selecting methods, identifying data collection sources, and setting clear timelines. This guide covers all the preliminary steps needed to lay a strong foundation for your research.
This lays foundation of scoping research project what are the
Before embarking on a research project, especially one aimed at scoping and defining parameters like the one described for health tech IT, several crucial considerations should be addressed. Here’s a comprehensive guide covering key aspects to ensure a well-structured and successful research initiative:
1. Define Research Objectives and Scope
Clear Objectives: Define specific goals such as understanding market needs, identifying new opportunities, assessing risks, or refining pricing strategies.
Scope Definition: Clearly outline the boundaries of the research in terms of geographical focus, target demographics (e.g., age, socio-economic status), and industry sectors (e.g., healthcare IT).
3. Review Existing Literature and Resources
Literature Review: Conduct a thorough review of existing research, market reports, and relevant literature to build foundational knowledge.
Gap Analysis: Identify gaps in existing knowledge or areas where further exploration is needed.
4. Select Research Methodology and Tools
Methodological Approach: Choose appropriate research methods such as surveys, interviews, focus groups, or data analytics.
Tools and Resources: Select tools like Google Forms for surveys, analytics platforms (e.g., SimilarWeb, Statista), and expert consultations.
5. Ethical Considerations and Compliance
Ethical Approval: Ensure compliance with ethical guidelines for research involving human subjects.
Data Privacy: Implement measures to protect participant confidentiality and adhere to data protection regulations (e.g., GDPR, HIPAA).
6. Budget and Resource Allocation
Resource Planning: Allocate resources including time, budget, and personnel required for each phase of the research.
Contingency Planning: Anticipate and plan for unforeseen challenges or adjustments to the research plan.
7. Develop Research Instruments
Survey Design: Create well-structured surveys using tools like Google Forms to gather quantitative data.
Interview and Focus Group Guides: Prepare detailed scripts and discussion points for qualitative data collection.
8. Sampling Strategy
Sampling Design: Define the sampling frame, size, and method (e.g., random sampling, stratified sampling) to ensure representation of target demographics.
Participant Recruitment: Plan recruitment strategies to reach and engage the intended participant groups effectively.
9. Data Collection and Analysis Plan
Data Collection: Implement methods for data gathering, ensuring consistency and validity.
Analysis Techniques: Decide on analytical approaches (e.g., statistical
VEDANTA AIR AMBULANCE SERVICES IN REWA AT A COST-EFFECTIVE PRICE.pdf
Air Ambulance Services In Rewa works in close coordination with ground-based emergency services, including local Emergency Medical Services, fire departments, and law enforcement agencies.
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PPT on Embryological and fetal development
Embryological development and fetal development
Factors influencing fetal development
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留信网认证的作用:
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我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
Sectional dentures for microstomia patients.pptx
Microstomia, characterized by an abnormally small oral aperture, presents significant challenges in prosthodontic treatment, including limited access for examination, difficulties in impression making, and challenges with prosthesis insertion and removal. To manage these issues, customized impression techniques using sectional trays and elastomeric materials are employed. Prostheses may be designed in segments or with flexible materials to facilitate handling. Minimally invasive procedures and the use of digital technologies can enhance patient comfort. Education and training for patients on prosthesis care and maintenance are crucial for compliance. Regular follow-up and a multidisciplinary approach, involving collaboration with other specialists, ensure comprehensive care and improved quality of life for microstomia patients.
Top 5 Benefits of Cancer Registry Services
Ensure the highest quality care for your patients with Cardiac Registry Support's cancer registry services. We support accreditation efforts and quality improvement initiatives, allowing you to benchmark performance and demonstrate adherence to best practices. Confidence starts with data. Partner with Cardiac Registry Support. For more details visit https://cardiacregistrysupport.com/cancer-registry-services/
Simple Steps to Make Her Choose You Every Day
Simple Steps to Make Her Choose You Every Day" and unlock the secrets to building a strong, lasting relationship. This comprehensive guide takes you on a journey to self-improvement, enhancing your communication and emotional skills, ensuring that your partner chooses you without hesitation. Forget about complications and start applying easy, straightforward steps that make her see you as the ideal person she can't live without. Gain the key to her heart and enjoy a relationship filled with love and mutual respect. This isn't just a book; it's an investment in your happiness and the happiness of your partner
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Anatomyofeyelid 110601165343-phpapp02-converted
- 1. ANATOMY OF EYELID SURESH KUMAR PATEL OPTOMETRIST SADGURU NETRA CHIkITSALAYA CHITRAKOOT (M.P)
- 2. • An eyelid is a thin fold of skin that covers and protects an eye. • With the exception of the prepuce and the labia minora, it has the thinnest skin of the whole body. • The human eyelid features a row of eyelashes which serve to heighten the protection of the eye from dust and foreign debris, as well as from perspiration. Page 2
- 3. • Its key function is to regularly spread the tears and other secretions on the eye surface to keep it moist, since the cornea must be continuously moist. • They keep the eyes from drying out when asleep. • Moreover, the blink reflex protects the eye from foreign bodies. Page 3
- 5. • Each eyelid is divided by a horizontal furrow (sulcus) into an orbital and tarsal part. Page 5
- 6. • When eye is open, the upper lid covers about 1/6th of the cornea & the lower lid just touches the limbus. Page 6
- 7. • The two lids meet each other at medial and lateral angles(or outer & inner canthi). • The medial canthus is about 2mm higher than the lateral canthus. Page 7
- 8. • It is the elliptical space b/w the upper and the lower lid. • When the eyes are opened, it measures about 10-11mm vertically in the centre and about 28-30mm horizontallly. Page 8
- 9. THE LID MARGIN Page 9 • It is About 2mm broad and is divided into two parts by punctum. • The medial, lacrimal portion is rounded and devoid of lashes or glands. • The lateral, ciliary portion consist of rounded anterior border, a sharp posterior border and an inter-marginal strip.
- 10. Page 10 STRUCTURE 1. SKIN: It is elastic having fine texture and is the thinnest of the body. 2. THE SUBCUTANEOUSAREOLAR TISSUE: It is very loose and contain no fat. It is thus readily distended by oedema or blood.
- 11. 3·THE LAYER OFSTRIATED MUSCLE:- • It consist of orbicularis muscle which forms an oval sheet across the eyelids. • It comprises three portions:- iv.Theorbital v.Thepalpebral vi.The lacrimal It closes the eyelids & is supplied by zygomatic branch of the facial nerve. Page 11
- 12. • In addition, the upper lid also contains levator palpebrae superioris muscle(LPS). • It arises from apex of the orbit and is inserted by three parts on the skin of lid, anterior surface of tarsal plate and conjuctutiva of superior fornix. • It raises the upper lid. • It is supplied by a branch of occulomotor nerve. Page 12
- 13. 4. SUBMUSCULARAREOLAR TISSUE: The layer of loose connective tissue. • The nerve and vessels lie in this layer. • Therefore, to anaesthetize lid, injection is given in this plane. Page 13
- 14. Free Powerpoint Templates 5·FIBROUS LAYER:- It is the framework of the lids and consist of two parts: the central tarsal plate and the peripheral septum orbitale. a.) Tarsal plate: There are two plates of dense connective tissue, one for each lid, which give shape and firmness to the lids. The upper and lower tarsal plates join with each other at medial and lateral canthi; and are attached to the orbital margins through medial and lateral palperable ligaments. In the substance of the tarsal plates lie meibomian glands in parallel rows. Page 14
- 15. b.) Septum orbitale (palpebral fascia). It is thin membrane of connective tissue perforated by nerves , vessels and LPS muscle, which enter the lids from the orbit. Page 15
- 16. ·LAYER OFNON-STRIATED MUSCLE FIBRES: it consist of the palpebral muscle of muller which lies deep to the septum orbitale in both the lids. In the upper lid it arises from the fibres of LPS muscle and in the lower lid from prolongation of the inferior rectus muscle; and is inserted on the peripheral margins of the tarsal plate. It is supplied by sympathetic fibres. Page 16
- 17. 7. Conjuctiva: The part which lines the lids is called palpebral conjuctiva. It consist of three parts” marginal, tarsal and orbital. Page 17
- 21. BLOOD SUPPLY Page 21 ARTERIES: In humans, the eyelids are supplied with blood by two arches on each upper and lower lid. The arches are formed by anastamoses of the lateral palpebral arteries and medial palpebral arteries, branching off from the lacrimal artery and ophthalmic artery, respectively.
- 22. BLOOD SUPPLY Page 22 VEINS: These are arranged in two plexus: a post- tarsal which drains into ophthalmic veins and a pre-tarsal opening into subcutaneous veins. LYMPHATICS: Arranged as post-tarsal and pre-tarsal. Those from lateral half of the lids drain into preauricular lymph nodes and those from the medial half of the eyelids drain into submandibular lymph nodes.
- 23. NERVES OF LIDS Page 23 • MOTOR NERVES are facial (which supplies orbicularis muscle), oculomotor (which supplies LPS muscle) and sympathetic fibres (which supply the muller’s muscle). • SENSORY NERVE supply is derived from branches of the trigeminal nerve.
- 24. Free Powerpoint Templates Page 24 JAI BHAGWAN