Diagnosis, Management, and Surgery by Adam J. Cohen, Michael Mercandetti & Brian G. Brazzo. The dry eye , a practical approach by Sudi Patel & Kenny J Blades. Jack J Kanski’s clinical ophthalmology Clinical Anatomy of the Eye by Richard S. Snell & Michael A. Lemp.
3. It is concerned with the tear formation & transport. Lacrimal passage includes : Lacrimal gland Conjunctival sac Lacrimal puncta Lacrimal canaliculi Lacrimal sac Nasolacrimal duct
4. The following components of the lacrimal apparatus are discussed : Embryology Osteology Secretory system Excretory system Physiology
5. Ectodermal origin Solid epithelial buds(first 2 months) Supero
Direct Download Link ❤❤https://healthkura.com/eye-ppt/28/❤❤
Dear viewers Check Out my other piece of works at ❤❤❤ https://healthkura.com/eye-ppt/❤❤❤
anatomy of optic nerve and its blood supply and clinical corelation
Presentation Layout: optic nerve anatomy
Embryology of optic nerve
Introduction
Parts of optic nerve
Blood supply
Clinical significance
For Further Reading
Wolff’s Anatomy of the eye and orbit by Bron, Tripathi and Tripathi
Anatomy and Physiology of eye by A.K. Khurana 2nd edition
Comprehensive Ophthalmology by A.K. Khurana 5th edition
AAO- Fundamentals & Principles of Ophthalmology : sec 2
Walsh and Hoyt’s Clinical Ophthalmology
Internet
This lecture includes anatomy, Physiology of Sclera, if u like it kindly share it with colleagues and like it. I will share more lectures related to eye anatomy and optometry.
Thank You.
LIMBUS… • The limbus forms the border between the transparent cornea and opaque sclera, contains the pathways of aqueous humour outflow, and is the site of surgical incisions for cataract and glaucoma
2. Anatomical Limbus: Circumcorneal transitional zone of the conjunctivocorneal & corneoscleral junction Conjunctivo-corneal junction: • Bulbar conjunctiva is firmly adherent to underlying structures • Substantia propria of the conjunctiva stops here but its epithelium continues with that of the cornea. Sclero-corneal junction: • Transparent corneal lamellae become continuous • With the oblique, circular and opaque fibres of sclera
3. CONTINUE…. • In the area near limbus, the conjunctiva, tenon’s capsule & the episcleral tissue are fused into a dense tissue which is strongly adherent to corneo scleral junction.It is preferred site for obtaining a firm hold of the eyeball during ocular surgery. • The limbus is a common site for the occurrence of corneal epithelial neoplasm. • The Limbus contains radially oriented fibrovascular ridge known as the palisades of Vogt that may harbour a stem cell population. The palisades of Vogt are more common in the superior and inferior quadrants around the eye
Direct Download Link ❤❤https://healthkura.com/eye-ppt/28/❤❤
Dear viewers Check Out my other piece of works at ❤❤❤ https://healthkura.com/eye-ppt/❤❤❤
anatomy of optic nerve and its blood supply and clinical corelation
Presentation Layout: optic nerve anatomy
Embryology of optic nerve
Introduction
Parts of optic nerve
Blood supply
Clinical significance
For Further Reading
Wolff’s Anatomy of the eye and orbit by Bron, Tripathi and Tripathi
Anatomy and Physiology of eye by A.K. Khurana 2nd edition
Comprehensive Ophthalmology by A.K. Khurana 5th edition
AAO- Fundamentals & Principles of Ophthalmology : sec 2
Walsh and Hoyt’s Clinical Ophthalmology
Internet
This lecture includes anatomy, Physiology of Sclera, if u like it kindly share it with colleagues and like it. I will share more lectures related to eye anatomy and optometry.
Thank You.
LIMBUS… • The limbus forms the border between the transparent cornea and opaque sclera, contains the pathways of aqueous humour outflow, and is the site of surgical incisions for cataract and glaucoma
2. Anatomical Limbus: Circumcorneal transitional zone of the conjunctivocorneal & corneoscleral junction Conjunctivo-corneal junction: • Bulbar conjunctiva is firmly adherent to underlying structures • Substantia propria of the conjunctiva stops here but its epithelium continues with that of the cornea. Sclero-corneal junction: • Transparent corneal lamellae become continuous • With the oblique, circular and opaque fibres of sclera
3. CONTINUE…. • In the area near limbus, the conjunctiva, tenon’s capsule & the episcleral tissue are fused into a dense tissue which is strongly adherent to corneo scleral junction.It is preferred site for obtaining a firm hold of the eyeball during ocular surgery. • The limbus is a common site for the occurrence of corneal epithelial neoplasm. • The Limbus contains radially oriented fibrovascular ridge known as the palisades of Vogt that may harbour a stem cell population. The palisades of Vogt are more common in the superior and inferior quadrants around the eye
ANATOMY & PHYSIOLOGY Lecturer: Tatyana V. Ryazantseva
2. Outer eye: Eyelids The eyelids fulfill two main functions: protection of the eyeball secretion, distribution and drainage of tears
3. Lid movement The levator extends from an attachment at the orbital apex to attachments at the tarsal plate and skin. ● The lids are securely attached at either end to the bony orbital margin by the medial and lateral palpebral ligaments. Trauma to the medial ligament causes the lid to flop forward and laterally, impairing function and cosmesis.
4. Innervation - Sensory innervation is from the trigeminal (fifth) cranial nerve, via the ophthalmic division (upper lid) and maxillary division (lower lid). - The orbicularis oculi is innervated by the facial (seventh) nerve. - The levator muscle in the upper lid is supplied by the oculomotor (third) nerve.
5. Blood supply and lymphatics The eyelids are supplied by an extensive network of blood vessels which form an anastomosis between branches derived from the external carotid artery via the face and from the internal carotid artery via the orbit.
6. Blood supply and lymphatics Lymphatic fluid drains into the preauricular and submandibular nodes. Preauricular lymphadenopathy is a useful sign of infective eyelid swelling (especially viral).
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.
astigmatism
AstigmatismAstigmatism Walter Huang, ODWalter Huang, OD Yuanpei UniversityYuanpei University Department of OptometryDepartment of Optometry
2. DefinitionDefinition When parallel rays of light enter the eyeWhen parallel rays of light enter the eye ((with accommodation relaxedwith accommodation relaxed) and do) and do notnot come to a single point focus on or nearcome to a single point focus on or near the retinathe retina
3. OpticsOptics Power in thePower in the horizontalhorizontal plane projects aplane projects a verticalvertical focal line imagefocal line image Power in thePower in the verticalvertical plane projects aplane projects a horizontalhorizontal focal line imagefocal line image
4. OpticsOptics Refraction of light taking place at a toricRefraction of light taking place at a toric surface: the conoid of Sturmsurface: the conoid of Sturm
TONOMETRY • Tonometry is the procedure performed to determine the intraocular pressure (IOP).
3. CLASSIFICATION TONOMETRY DIRECT INDIRECT Indentation Applanation Manometer
4. APPLANATION Contact Non-contact Goldmann Perkins Air-puff Pulse air
5. INDENTATION TONOMETER • It is based on fundamental fact that plunger will indent a soft eye more than hard eye. • The indentation tonometer in current use is that of Schiotz . • It was devised in 1905 and continued to refine it through 1927.
6. PROCEDURE • Patient should be anaesthetising with 4% lignocaine or 0.5% proparacaine. • with the patient in supine position, looking up at a fixation target while examiners separates the lids and lower the tonometer plate to rest on the cornea so that plunger is free to move. •
. Introduction Biomicroscope derives its name from the fact that it enables the practitioner to observe the living tissue of eye under magnification. It not only provides magnified view of every part of eye but also allows quantitative measurements and photography of every part for documentation.
3. • The lamp facilitates an examination which looks at anterior segment, or frontal structures, of the human eye, which includes the –Eyelid –Cornea –Sclera –Conjunctiva –Iris –Aqueous –Natural crystalline lens and –Anterior vitreous.
4. Important historical landmarks De Wecker 1863 devised a portable ophthalmomicroscope . Albert and Greenough 1891,developed a binocular microscope which provided stereoscopic view. Gullstrand ,1911 introduced the illumination system which had for the first time a slit diapharm in it Therefore Gullstrand is credited with the invention of slit lamp.
1. Introduction Gross anatomy Layers Blood supply, drainage and nerve supply
2. INTRODUCTION • Sclera forms posterior 5/6th of external tunic , connective tissue coat of eyeball. • it continues with duramater and cornea • Its whole surface covered by tenon’s capsule • Anteriorly covered by- bulbar conjunctiva • Inner surface lies in contact with choroid • With a potential suprachoroidal space in between
3. Equa THICKNESS OF SCLERA
4. • Thickness varies with individual, with age • Thinner- children, elder, F> M • Thickest posteriorly • Gradually becomes thinner when traced anteriorly • Thin at insertion of extraocular muscle
The pupil is an opening located in the center of the iris that allows light to enter the retina. • Its function is to control the amount of light entering the eye and it does this via contraction (miosis) and dilation (mydriasis) under the influence of the autonomic nervous system
3. • The iris is a contractile structure, consisting mainly of smooth muscle, surrounding the pupil. Light enters the eye through the pupil, and the iris regulates the amount of light by controlling the size of the pupil.
4. The iris contains two groups of smooth muscles: a circular group called the sphincter pupillae. and a radial group called the dilator pupillae.
5. Parasympathetic pathway • First Order – Retina to Pretectal Nucleus in B/S (at level of Superior colliculus) Second Order – Pretectal nucleus to E/W nucleus (bilateral innervation!) Third Order – E/W nucleus to Ciliary Ganglion Fourth Order – Ciliary Ganglion to Sphincter pupillae (via short ciliary nerves) • • •
The tear film constitutes Three layers :- An outermost lipid (oily) layer An aqueous (watery) layer that makes up 90% of the tear film volume; and A mucin layer that coats the corneal surface.
3. To form smooth optical surface on cornea. To keep the surface of cornea & conjunctiva moist It serve as lubricant It transfer oxygen Provide antibacterial action Wash debris out It provides a pathway for WBC in case of injury
4. Functions of lipid layer Retards evaporation of tear film Prevents the overflow of tears
5. Function of Aqueous Layer Flushes, buffers and lubricates the corneal surface Delivers oxygen and other nutrients to the corneal surface Wash out debris Delivers antibacterial enzymes and antibodies such as lysozyme.
6. Functions of Mucin Layer Spreads tears over corneal surface. Protects the cornea against foreign substances . Makes corneal surface smooth by filling in surface irregularities
Introduction Transparent,avascular,watch-glass like structure. Forms 1/6th part of outer fibrous coat (Sclera) It is the major refracting surface of the eye
3. Dimensions + Avg horizontal dia =11.75 mm (ant surface) + Avg vertical dia = 11 mm (ant surface ) + Avg dia (post surface)= 11.5 mm + Thickness(centre) =0.52mm + Thickness(peripheral) = 0.67mm + Radius of curvature (ant surface) = 7.8mm + Radius of curvature (post surface)= 6.5mm + Refractive power (ant surface) = +48D + Refractive power(post surface)= - 5D + R.I = 1.376
4. Histology + Epithelium + Bowman’s membrane + Stroma + Dua’s layer + Descemet’s membrane + Endothelium
5. Epithelium + Made up of stratified squamous epithelium + Thickness - 50-90 um + 5-6 layers of cells + Regenerative, entire epithelial layer is replaced every 6-8 days + Made up of 3 types of cells - basal,wing, flattened cells + Cells are attached by to each other by means of desmosomes & maculi occludents
6. Bowman’s membrane + Acellular,Non regenerative + Made up of condensed collagen fibrils. + Thickness - 12um + Resistant to infection & injury.
Extraocular musles(EOM) They are six in number Four recti: Superior rectus Inferior rectus Medial rectus Lateral rectus Two oblique muscles: Superior oblique Inferior oblique
3. SUPERIOR RECTUS MUSCLE . Origin Superior part of common annular tendon of Zinn Course Passes anterolaterally beneath the levator At 23 degrees with the globe ‘s AP axis Pierces Tenon s capsule Insertion into sclera by flat tendinous 10 mm broad insertion 7.7 mm behind sclero-corneal junction. 42 mm long 9 mm wide
4. Nerve supply Sup division of 3rd N Blood Supply Lateral Muscular br. of Ophthalmic A APPLIED: SR loosely bound to LPS muscle. • During SR resection- eyelid may be pulled forward narr owing palpebral fissure • In hypotropia pseudoptosis may be present Origin of SR and MR are closely attached to the dural sheat h of the optic nerve pain during upward & inward movements of the globe in RETROBULBAR NEURITIS
Diseases of sclera
2. anatomy • Sclera posterior 5/6th opaque part of the external fibrous tunic of the eyeball.
3. • outer surface }covered by Tenon's capsule. • anterior part } covered by bulbar conjunctiva.
4. Its inner surface lies in contact with choroid with a potential suprachoroidal space in between
5. Thickness of sclera. • thinner }children and in females Sclera • thickest} posteriorly (1mm) • gradually becomes thin when traced anteriorly. • thinnest } insertion of extraocular muscles (0.3 mm). • Lamina cribrosa is a sieve-like sclera from which fibres of optic nerve pass.
6. Apertures of sclera • Anterior • Anterior ciliary vessels • Middle • four vortex veins (vena verticosae) • Posterior • Optic nerve • Long & short ciliary nerves
7. Layers of sclera sclera episclera Sclera proper Lamina fusca thin, dense vascularised layer of connective tissue fibroblasts, macrophages and lymphocytes avascular structure dense bundles of collagen fibres. innermost blends with suprachoroidal and supraciliary laminae of the uveal tract. brownish in colour presence of pigmented cells.
Main physiologic function of cornea is to act as a major refracting medium, so that a clear retinal image is formed. • Normal corneal transparency is result of • 1.anatomical factor such as uniform and regular arrangement of corneal epithelium, peculiar arrangement of corneal lamella and corneal vascularity 2.Physiological factor [ie] relative state of corneal dehydration.
3. • Therefore, any process which upsets the anatomy or physiology of cornea will cause LOSS OF TRANSPARENCY to some degree.
4. FACTORS AFFECTING CORNEAL TRANSPARENCY • CORNEAL EPITHELIUM &TEAR FLIM • ARRANGEMENT OF STROMAL LAMELLA • CORNEAL VASCULARIZATION • CORNEAL HYDRATION • CELLULAR FACTORS AFFECTING TRANSPARENCY
CONJUNCTIVA: ANATOMY , PHYSIOLOGY, SYMPTOMATOLOGY AND CLASSIFICATION Pranay Shinde DNB Resident Deen Dayal Upadhyay Hospital,New Delhi
2. ANATOMY It is the mucous membrane covering the under surface of the lids and anterior part of the eyeball upto the cornea.
3. Parts of conjunctiva • Palpebral; covering the lids—firmly adherent. • Forniceal; covering the fornices—loose—thrown into folds. • Bulbar; covering the eyeball—loosely attached except at limbus.
4. Palpebral conjunctiva • Subtarsal sulcus 2mm from posterior edge of the lid margin. • Richly vascular. • Extremely thin. • Strongly bound to the tarsal plate.
5. Palpebral conjunctiva is subdivided into three parts: 1)Marginal 2)Tarsal 3)Orbital
6. Conjunctival fornices • Transitional region between palpebral and bulbar conjunctivae. • Superior fornix 10 mm from limbus. • Inferior fornix 8 mm from limbus. • Lateral fornix 14mm from limbus. • Medially absent. • Ducts of lacrimal glands open into lateral part of superior fornix.
q Colour Vision Deficiency Presented by : Optometrist (intern) Asma Al-Jroudi Saudi Arabia, Riyadh, King Abdulaziz University Hospital 30 Dec 14
2. • What Is Color Vision Deficiency? • Causes Of Color Vision Deficiency • Types Of Color Vision Deficiency • Tretments Of Color Vision Deficiency • Ishihara’s Test • Conclousion
3. What is Colour Blindness? • Color blindness, or color vision deficiency, is the inability or decreased ability to see color, or perceive color differences, under normal lighting conditions. •This condition results from an absence of color- sensitive pigment in the cone cells of the retina, the nerve layer at the back of the eye.
4. What is Colour Blindness? • Cones are the coulored light receptors in back of the eye: Red light receptors, Blue light receptors and Green light receptors. • Colour blindness occurs when one or more of the cone types are defected.
5. Causes of Color Blindness • Genetic: Many more men are affected than women. • Acquired : Chronic illness, Accidents, Medications and Age.
Anatomy and Physiology of Aqueous Humor Sumit Singh Maharjan
2. Anatomy
3. Angle of anterior chamber
4. Angle of the Anterior chamber
5. Gonioscopic grading of Angle
6. Aqueous Outflow system
7. Trabecular meshwork
8. Functions of Aqueous Humor • Maintenance of Intraocular pressure • Metabolic role cornea lens vitreous and retina • Optical function • Clearing function
9. Physicochemical properties • volume: 0.31ml (0.25ml in Ant. Chamber and 0.06 in post chamber) • Refractive index: 1.336 • Density: slightly greater than water, its viscocity is 1.025-1.040 • Osmotic pressure: slightly hyperosmotic to plasma by 3-5mosm/l • PH: 7.2 • Rate of formation: 2-2.5microliter/min
10. Biochemical composition • Water: 99.9% • Proteins: 5-16mg/100ml • Amino acids: aqueous/plasma concentration varies from 0.08-3.14 • Non colloidal constituents: conc. of ascorbate, pyruvate, lactate in higher am
Vitreous humour
1. Vitreous Humour
2. General features Vitreous humour is an inert ,transparent , colourless, jellylike, hydrophilic gel that serves the optical functions and also acts as important supporting structures for the eyeball. The vitreous cavity is bounded by anteriorly by the lens and ciliary body and posteriorly by the retina Its weighs nearly 4g Vitreous is an extacellular material composed of approximately 99 per cent water
3. Structure The vitreous body is the largest and simplest connective tissue present as a single piece in the human body Divided into three parts- 1. The hyaloid layer or membrane 2. The cortical vitreous and 3. The medullary vitreous
Vitamins all
1. Vitamins. Definition - Organic compound required in small amounts. Vitamin A Vitamin B1, B2, B3, B5, B6, B7, B9, B12 Vitamin D Vitamin E Vitamin K A few wordsabout each.
2. Sourcesin diet - Many plants(photoreceptors), also meat, especially liver. Fat soluble, so you can get too much, or too littleif absorption isaproblem. Vitamin A - Retinol Retinol (vitamin A) Someuses: Vision (11-cis-retinol bound to rhodopsin detectslight in our eyes). Regulating genetranscription (retinoic acid receptorson cell nuclei arepart of a system for regulating transcription of mRNAsfor anumber of genes).
Tear film
1. TEAR FILM
2. The outer most layer of the cornea. It is the exposed part of the eyeball. FUNCTION It provide smooth optical surface It serves to keep the surface of cornea and conjunctiva moist. It serves as a lubricant for the preocular surface and lids It transfer oxygen from the air to the cornea Prevent infection due to the presence of antibacterial substance like lysozymes,and other protein. It wash away debris and irritants Provides pathway to WBC in case of injury.
3. LAYERS OF TEAR FILM It consist of three layers: 1.Lipid layer 2.Aqueous layer 3.Mucoid layer 1.LIPID LAYER
Synthesis
1. Synthesis of Fatty acids
2. Fatty acids are synthesized mainly by de novo synthetic pathway operating in the cytoplasm . It is called as extramitochondrial or cytoplasmic fatty acid synthase system. The major fatty acids synthesised de novo is palmitic acid, the 16C saturated fatty acids. The process occurs in liver ,adipose tissue ,kidney and mammary glands. Fatty acids synthase (FAS) complex : This system exists as multi- enzyme complex .This enzyme form a dimer with identical subunits. Each subunits of the complex is organised into 3 domains with 7 enzyme.
Retina
1. RETINA
2. Photoreceptor cells • These are the primary neurons in the visual pathway • Lie at the outer edge of the retina • The photoreceptor cells differentiate longitudinally into four major regions: 1. the inner segment containing the metabolic apparatus 2. the outer segment containing the visual pigment for the conversion of light into neuroelectrical energy 3.a region containing the cell nucleus 4. a synaptic
Hydrocarbon nomenclature
1. Naming Hydrocarbons (nomenclature)
2. Drawing Structures: It’s All Good CH3 C H C H CH3 CH3 CH3 CH3 CH CH CH3 2-butene This is called the “condensed structure” C C C C H H H H H H H H CH3 CH CH CH3 On a test, choose a method that shows all Hs CH3CH=CHCH3 Using brackets can also shorten some formulas: CH3CH2CH2CH2CH2CH3 vs. CH3(CH2)4CH3
3. Basic Naming of Hydrocarbons Hydrocarbon names are based on: 1) type, 2) # of carbons, 3) side chain type and position 1) name will end in -ane, -ene, or -yne 2) the number of carbons is given by a “prefix” 1 meth- 2 eth- 3 prop- 4 but- 5 pent- 6 hex- 7 hept- 8 oct- 9 non- 10 dec- Actually, all end in a, but a is dropped when next to a vowel. E.g. a 6 C alkene is hexene Q - What names would be given to these: 7C, 9C alkane 2C, 4C alkyne 1C, 3C alkene heptane, nonane ethyne, butyne methene, propene
4. Mnemonic for First Four Prefixes First four prefixes • Meth- • Eth- • Prop- • But- Monkeys Eat Peeled Bananas
5. ? Decade Decimal Decathalon Other Prefixes •
More from C L GUPTA EYE INSTITUTE MORADABAD UTTER PRADESH (20)
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
2. Wolff's Anatomy of the Eye and Orbit.
Adler's Physiology of the Eye .
The Lacrimal System
Diagnosis, Management, and Surgery by Adam J.
Cohen, Michael Mercandetti & Brian G. Brazzo.
The dry eye , a practical approach by Sudi Patel
& Kenny J Blades.
Jack J Kanski’s clinical ophthalmology
Clinical Anatomy of the Eye by Richard S. Snell
& Michael A. Lemp.
3.
4. It is concerned with the tear formation &
transport.
Lacrimal passage includes :
Lacrimal
gland
Conjunctival
sac
Lacrimal
puncta
Lacrimal
canaliculi
Lacrimal
sac
Nasolacrimal
duct
5.
6. The following components of the lacrimal
apparatus are discussed :
Embryology
Osteology
Secretory system
Excretory system
Physiology
8. Lacrimal sac and nasolacrimal duct : ectoderm
of the naso-optic furrow or nasolacrimal furrow
The ectoderm of the furrow buries and forms a
solid cord .
Canalization : begins at 4 months and may
continue after birth.
9.
10. The lacrimal sac fossa is a depression in the
inferomedial orbital rim,
Maxillary and lacrimal bones.
Bordered by the anterior lacrimal crest
(maxillary bone) & posterior lacrimal crest
(lacrimal bone).
The fossa is approximately 16-mm high, 4- to 9-
mm wide, and 2-mm deep.
11.
12. The medial orbital wall : Frontal process of
maxilla, lacrimal , ethmoid , lesser wing of
sphenoid bone.
The frontoethmoidal suture is important in
lacrimal surgery
It marks the roof of the ethmoid sinus. Bony
dissection superior to this suture may expose
the dura of the cranial cavity.
13. The nasolacrimal canal originates at base of
lacrimal fossa.
Formed by the maxillary bone laterally and the
lacrimal and inferior turbinate bones medially.
The width of superior opening is 4–6 mm.
The duct courses posteriorly and laterally in
the bone for 12 mm to drain into the inferior
meatus of the nasal cavity.
14. It includes lacrimal gland, accessory glands
Lacrimal gland is above & anterolateral to globe.
Secretes tears into superior fornix.
Tears moisten & lubricates the : cornea
, conjunctiva.
It contributes 43D of 50D of refractive power of
eye .
15. It consists of
Large Orbital Part
Smaller Palpebral Part
Lateral expansion of levator separates the parts
16. Paired almond-shaped glands.
It is present in a fossa on the anterolateral area
of orbit
It has 2 surfaces, 2 borders, 2 extremities
Superior surface
Frontal bone
Inferior surface
Levator palpebrae superioris & lateral rectus
17. Anterior border
Septum orbitale
Posterior border
Contact with orbital fat , level with posterior
pole.
Lateral extremity
Rest on lateral rectus
Medial extremity
On levator
18. 1/3rd size of orbital part
Superior fornix , seen on lid eversion.
It is situated upon the course of ducts
Related to levator superiorly, inferiorly to
superior fornix
Posteriorly it continues with orbital part.
19. Are small, compound, branched, tubular glands
Located in the middle of lid (Wolfring glands)
or superior & inferior fornices (Krause glands).
Ectopic portions of lacrimal gland tissue.
20. It is with connective tissue coat and excretory
duct.
The excretory duct splits & form intralobular
ducts, connected to secretory glandular
epithelia.
Secretory epithelia have elongated tubules.
True acini are absent.
21.
22.
23. Tubuloacinar with short, branched tubules
Acini are pyramidal secretory cells with apex
towards a central lumen .
Myoepithelial cells., contractile & aid the
secretion
24. In acinus, secretory cells are joined by
junctional complexes
Apical microvilli extend into the lumen
Nucleus and rough endoplasmic reticulum are
basal in the cells.
Abundant secretory granules, at apex .
25.
26. The ducts have two or three cell layers and
microvilli at luminal surface.
Plasma cells of the interstitial space are an
important source of immunoglobulins secrete
IgA(and fewer lgG, lgM, IgE)
27.
28. Artery supply : Lacrimal artery , branch of
ophthalmic artery.
Venous drainages : Ophthalmic Vein.
Lymphatic drainage : Joins that of conjunctiva &
drain into the preauricular lymph nodes.
29. Sensory nerve supply : lacrimal nerve
, branch of ophthalmic division of Vth nerve
Sympathetic nerve supply : carotid plexus
Secretomotor fibers : superior salivary
nucleus
30.
31.
32. A small, round or oval orifice on the
elevation, the papilla lacrimalis.
At medial end of lid margin at the junction of its
ciliated and non-ciliated parts.
Upper punctum medial to lower, from the
medial canthus being 6 and 6.5 mm.
The upper punctum opens inferoposteriorly, the
lower superoposteriorly.
33.
34. First vertical and then horizontal
Vertical part is 2 mm & turns medially at right-angle
to become horizontal 8 mm
At angle - dilatation or ampulla.
The canaliculi pierce the fascia (i.e. the periorbita
covering the lacrimal sac) separately,
Uniting to enter lacrimal sac.
Stratified squamous epithelium supported by
elastic tissue.
35. Lacrimal fossa, formed by lacrimal bone and
frontal process of maxilla .
The sac, closed above and open below, is
continuous with the nasolacrimal duct.
The sac is enclosed by a periorbita, splits &form
the lacrimal fascia .
36. Relations
Medial : periorbita and bone, arc of ethmoid
sinuses.
Lateral : skin, orbicularis oculi, and lacrimal
fascia.
Anterior: medial palpebral ligament and
angular vein.
Posterior : lacrimal fascia and muscle
37. The nasolacrimal duct, continuation of lacrimal
sac to the inferior meatus.
15 mm.
It lies in a canal formed by the maxilla, lacrimal
bone and lacrimal process of inferior concha.
It descends posterolaterally, a surface indication
a line from medial canthus to first upper molar.
38. The valves
They are folds of mucous
membrane with no
valvular function.
The most constant is the
'valve' of Hasner at the
lower end.
It prevents sudden blast of
air (when blowing the
nose) from entenng the
lacrimal sac.
39. Structure
Double-layered Epithelium
The superficial layer composed of columnar
cells, the deeper cells being flatter.
The membranous wall of the sac is of
fibroelastic tissue, the elastic element being
continued around the canaliculi.
40. Around the nasolacrimal duct is plexus of
vessels, forming erectile tissue like that on the
inferior concha.
Engorgement of these vessel obstruct the duct.
The course of the lacrimal sac and duct can be
demonstrated by dacryocystography
41. Vessels
Artery supply : palpebral branches of the
ophthalmic, angular and infraorbital arteries and nasal
branch of the sphenopalatine.
Venous drainages : Angular and infraorbital vessels
above, below into the nasal veins
Lymphatic drainage: submandibular and deep cervical
nodes.
Nerves
Infratrochlear and anterior superior alveolar nerves.
42. The tear film overlays corneal and conjunctival
epithelia.
Tears produced by the ocular surface epithelia
and adnexa.
Thickness of up to 40 µm,
Volume of tears covering the ocular surface
range from 2.74 ± 2.0µL to 7 µL
43. For mucous and aqueous layers, secretion is
regulated by neural reflexes.
For the lipid layer, the blink itself regulates
release of pre-secreted meibomian gland .
Tear secretion is balanced by drainage and
evaporation.
Drainage is regulated by neural reflexes ,causing
vasodilation and vasoconstriction of blood sinus.
Evaporation depends blink rate and
temperature, humidity, and wind speed.
44. To protect the cornea from drying;
To maintain the refractive power of the cornea;
To defend against eye infection;
To allow gas to move between the air and the
avascular cornea;
To support corneal dehydration (assisted by the
tear film hyperosmolality).
45. Consists of four layers
Glycocalyx
Mucous layer
Aqueous layer.
Lipid layers
46.
47. Structure
The glycocalyx is a network of polysaccharides that project
from cellular surfaces.
Mucins are classified into secreted and membrane-spanning
mucin.
Secreted mucins are either gel-forming or small soluble
Function
The membrane-spanning mucins function to hydrate the
ocular surface and serve as a barrier to pathogens.
Membrane-spanning mucins appear to be altered in dry eye
48. Structure
The mucous layer backbone is the gel-forming
mucin , synthesized and secreted by conjunctival
goblet cells.
Function
To resistance of the eye to infection by providing
protection against microorganisms.
Mucins serve as wetting agents that keep the apical
epithelia hydrated.
49. Lacrimal gland produce aqueous layer.
Other ocular surface epithelia also contribute to the
aqueous layer, eg. conjunctiva, accessory lacrimal
glands
7µm thick.
Without the lubrication , the shearing forces
produced on blinking will cause accumulative
ocular surface damage.
50. Composed of water, with many solutes, including
dissolved mucins, electrolyte sand proteins.
The osmotic pressure : concentrations of
sodium, potassium and chloride ions.
The tear film’s osmotic pressure is important in
the control of cornea–tear film water flux.
Bicarbonate and carbonate : pH
buffering, maintaining the pH at 7.3–7.6 when the
eyes open & 6.8 eyes closed.
51. Aqueous layer function
Aqueous deficiency dry eye.
Protection from bacterial infection
Reflex secretion washes away noxious
substances.
Protects against changes in pH.
52. Meibomian glands, modified sebaceous glands, that
line the upper and lower eyelids.
Meibomian gland lipids are stored in vesicles.
The secretory product contains a complex mixture
of lipids and proteins and is termed meibum.
Meibum is released on to the ocular surface in small
amounts with each blink.
0.1m in thickness
53. Function
Hydrophobic barrier to prevent tear overflow.
The meibom forms a water-tight seal of the
apposed lid margins during sleep.
Reduce tear evaporation .
Lipids enhance the stability of the tear
film and provide a smooth optical.
54.
55. Conjunctival fornices, preocular tear film, and
marginal tear strips.
Marginal tear strips are wedge shaped tear
menisci, borders of upper and lower lids.
Apposed lacrimal puncta dip into marginal
strip of tears
Anterior limit of the marginal strip is the
mucocutaneous junction of the lid,
56.
57. Tears are lost from the conjunctiva sac by
absorption, evaporation, and nasolacrimal
system.
This is related to the size of the palpebral
aperture, the blink rate, ambient temperature
and humidity.
58. Tears flow
the upper and lower marginal strips → upper and
lower canaliculi (capillarity+suction)
Eyes close
Pretarsal orbicularis oculi compresses the
ampullae+ shortens and compresses
canaliculi+puncta medially.
Lacrimal part of the orbicularis oculi, contracts →
compresses the sac,(positive pressure) tears →
nasolacrimal duct → nose.
Eyes open
Muscles relax → canaliculi and sac expand(negative
pressure)+capillarity= tears into sac.