The eye is composed of three layers - an outer fibrous coat, middle vascular coat, and inner nervous coat. The outer coat includes the sclera and cornea. The middle coat contains the choroid, ciliary body, and iris. The inner coat is the light-sensitive retina. Between these layers are the aqueous humor and vitreous humor, and a lens focuses light onto the retina to form images.
THIS POWER POINT PRESENTATION IS TO GIVE READERS AN OVERVIEW ON THE ANATOMY AND PHYSIOLOGY OF THE EYE: STRUCTURES, FUNCTIONS OF EACH PART OF THE EYE, AS WELL AS THE PHYSIOLOGY ON HOW THE IMAGE IS CAPTURED IN THE EYE AND TRANSLATED BY THE BRAIN IN ORDER TO HAVE THE MEANINGFUL VIEW OF THE IMAGE.
THIS POWER POINT PRESENTATION IS TO GIVE READERS AN OVERVIEW ON THE ANATOMY AND PHYSIOLOGY OF THE EYE: STRUCTURES, FUNCTIONS OF EACH PART OF THE EYE, AS WELL AS THE PHYSIOLOGY ON HOW THE IMAGE IS CAPTURED IN THE EYE AND TRANSLATED BY THE BRAIN IN ORDER TO HAVE THE MEANINGFUL VIEW OF THE IMAGE.
anatomy of an eye, internal structure of eye,layers of an eye ball, features of eye ball, cornea, sclera, retina, choroid, ciliary body lense, macula, blind spot, yellow spot, clinical aspect of eye , drainage of aqueous humor, cataract, glaucoma, causes of cataract and treatment.
Eye Anatomy and Physiology in b.pharm 1 semester and 2 semester of pharmacy education.
This slide help to more to make notes and easily read out this subject.
Slide Presentation for Anatomy of Eyeball. This slide is taken from Medicos Pdf app available in playstore. This app contains many more slides related to clinical science, basi science, nursing, dental and many more. You can download if you want many more slides.
In anatomy, special senses are the senses that have organs specifically devoted to them such as vision, gustation, olfaction, audition, and equilibrioception. These senses have specialized organs that detect and process stimuli and send signals to the brain which lead to the perception of that stimulus.
The human eye is an organ that reacts to light in many circumstances. As a conscious sense organ the human eye allows vision; rod and cone cells in the retina allow conscious light perception and vision, including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.
Following points are explain in this article:
Introduction of eye
Eyelids & tears
Morphology of eye-ball
Components of eye
Functions of eye parts
Diagrams
It describe the anatomy of eye in detail according to the BD chaurasia textbook.
It includes the parts of eye, internal structures, blood and nerve supply.
anatomy of an eye, internal structure of eye,layers of an eye ball, features of eye ball, cornea, sclera, retina, choroid, ciliary body lense, macula, blind spot, yellow spot, clinical aspect of eye , drainage of aqueous humor, cataract, glaucoma, causes of cataract and treatment.
Eye Anatomy and Physiology in b.pharm 1 semester and 2 semester of pharmacy education.
This slide help to more to make notes and easily read out this subject.
Slide Presentation for Anatomy of Eyeball. This slide is taken from Medicos Pdf app available in playstore. This app contains many more slides related to clinical science, basi science, nursing, dental and many more. You can download if you want many more slides.
In anatomy, special senses are the senses that have organs specifically devoted to them such as vision, gustation, olfaction, audition, and equilibrioception. These senses have specialized organs that detect and process stimuli and send signals to the brain which lead to the perception of that stimulus.
The human eye is an organ that reacts to light in many circumstances. As a conscious sense organ the human eye allows vision; rod and cone cells in the retina allow conscious light perception and vision, including color differentiation and the perception of depth. The human eye can distinguish about 10 million colors.
Following points are explain in this article:
Introduction of eye
Eyelids & tears
Morphology of eye-ball
Components of eye
Functions of eye parts
Diagrams
It describe the anatomy of eye in detail according to the BD chaurasia textbook.
It includes the parts of eye, internal structures, blood and nerve supply.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
3. INTRODUCTION
The eye or the organ of sight is situated in
the orbital cavity of the skull
It is well protected by bony walls of the orbit
Orbit also contains muscles of eyeball, their
nerves, blood vessels, and lacrimal gland
Each eyeball is similar to a camera and which
produces images
4. STRUCTURE OF THE EYEBALL
1. Wall of eye ball
2. Light transmitting media (or)
refractive media
5. WALL OF THE EYEBALL
:
OUTER LAYER (FIBROUS COAT) : SCLERA AND CORNEA
MIDDLE LAYER (VASCULAR COAT) : CHOROID ,CILIARY-
BODY AND IRIS
INNER LAYER (NERVOUS COAT) : RETINA
6. WALL OF EYEBALL
OUTER LAYER
(TUNICA EXTERNA OR
TUNICA FIBROSA)
CORNEA SCLERA
MIDDLE LAYER
(TUNICA MEDIA OR
TUNICA VASCULOSA)
CHOROID CILIARY BODY IRIS
INNER LAYER
(TUNICA INTERNA OR
TUNICA NERVOSA)
RETINA
(LAYERS OF RETINA,
ROD,, CONES, LAYER OF
NERVE FIBERS Etc.)
7. OUTER LAYER (OR) TUNICA EXTERNA (OR)
TUNICA FIBROSA
This gives shape of eyeball and contains sclera
and cornea
8. MIDDLE LAYER (OR) TUNICA MEDIA (OR) TUNICA
VASCULOSA
This layer comprises of three structures:,
•Choroid
•Ciliary body
•Iris
The choroid, ciliary body and iris
together form the uveal tract.
This layer contains blood vessels
Pupil is the small opening in
front of it
9. INNER LAYER (OR) TUNICA INTERNA (OR)
TUNICA NERVOSA (OR) RETINA
Retina is the light sensitive membrane
10. SCLERA AND CORNEA
- Sclera or the “white of the eye” forms the
outermost layer of the eyeball
- The anterior one sixth part of the sclera is
transparent and is known as cornea.
- The cornea is described as the “window of the
eye”
- Light rays pass through the cornea to reach the
retina.
11. FUNCTIONS OF SCLERA
• It provides protection to the delicate structure
within the eye
• It resists intraocular pressure
• It maintains shape of the eyeball
• The smooth external surface allow easy eye
movement
12. CHOROID
Choroid is a thin pigmented membrane, dark
brown in color which is situated in between sclera
(externally) and retina (internally)
13. CILIARY BODY
Ciliary body is the continuation of choroid
consisting of smooth muscle fibers, i.e., the ciliary-
muscle
14. Contd….
• Ciliary body contains suspensory ligament for
attaching the lens in position
• The ciliary muscles help in accommodation
by adjusting the thickness of lens
15. IRIS
• Iris is the pigmented membrane surrounds
the pupil
• It arises from the margin of ciliary body and
forms a dark centered opening called pupil
• The space between cornea (in front) and the
lens (behind) is the anterior segment
16. Contd…
• It is again divided into two parts by the iris;
• The space between the iris and cornea is the
anterior chamber
• The space between iris and lens is posterior
chamber
• They are filled with a clear fluid, the aqueous
humor
17. RETINA
• Retina is the inner most layer of the eyeball
• It is a thin delicate layer continuous posteriorly
with optic nerve
• The outer surface of the retina, formed by
pigment cells, is attached to choroid
• Its inner surface is in contact with the hyaloid
membrane of the vitreous
• The small area of retina where the optic nerve
leaves the eye is the optic disc or the blind spot.
It has no light sensitive cells (Rods or Cones)
18. The retina has three parts:
* OPTIC
* CILIARY
* IRIDIAL
The optic part contains nervous tissue and it is
sensitive to light
It extends from the optic disc to the ciliary body
The thin, non nervous, non sensitive layer covers the
ciliary body and iris is called ciliary and iridial part of
retina
Contd….
19. Contd…….
Lateral to the optic disc a depression called macula
lutea (due to its yellow color)
The center of macula is again depressed to form the
fovea centralis
It contains cones only and is the site of maximum
acuity of vision
The rods and cones are the receptors of light and sight
These cells contains photosensitive pigments (Rods-
Rhodopsin, Cones – Iodopsin) involved in the conversion
of light rays into nerve impulses
20. BLOOD SUPPLY
Arterial blood is supplied by branches of ophthalmic
artery (ciliary arteries ¢ral retinal artery)
Venous drainage a number of veins including the
central retinal vein
22. AQUEOUS HUMOR
• Aqueous humor is a clear
fluid fills the space between
cornea and lens
• It is secreted by capillaries
of ciliary process
• From here the fluid reaches
to the anterior chamber
which finally reaches to the
canal of schlemm
23. Contd…..
Interference with drainage of aqueous humor
results in an increase of intraocular pressure
(glaucoma)
(Normal IOP 10 to 20 mmHg)
This leads to atrophy of the retina, leading to
blindness
24. FUNCTIONS
• It helps to maintain intraocular pressure and thus
maintains the shape of eyeball
• It is rich in ascorbic acid, glucose and amino acids and
nourishes the cornea and lens
25. VITREOUS HUMOR
Vitreous humor or vitreous body is a colorless,
transparent, jelly-like substance which fills the posterior
segment of the eye (i.e., behind the lens).
It is enclosed in a delicate hyaloid membrane
26. FUNCTIONS
It helps to preserve the spherical shape of
the eyeball and to support the retina
27. LENS
The lens of the eyeball is crystalline in nature
It is situated behind the pupil
It is biconvex, transparent, and elastic in structure
Lens refracts light rays and helps to focus the image of
the object on retina
Lens is supported by suspensory ligaments (Zonular
fibers) which are attached with ciliary bodies
28. ACCESSORY ORGANS OF THE EYE
EYEBROWS
EYELIDS & EYELASHES
LACRIMAL APPARATUS
CONJUNCTIVA
29. CONCLUSION
Eye is the organ of the sense of sight,
situated in the orbital cavity.
It is a delicate organ and which is
protected by several structures.
