Cornea: The front transparent part of the sclera is called the cornea. It consists of the following parts: Sclera: It is the outer covering, a protective tough white layer called the sclera (white part of the eye). When it forms over the macula, it can cause visual distortion and blurring in the central vision. A human eye is roughly 2.3 cm in diameter and is almost a spherical ball filled with some fluid. The macula provides the sharp, central vision we need for reading, driving and seeing fine detail.Įpiretinal membrane: An ERM is a delicate tissue-like scar or membrane that forms on top of the retina. Macular hole: A macular hole is a small break in the macula, located in the center of the eye’s retina. It’s caused by damage to the blood vessels of the light-sensitive tissue at the back of the eye (retina). The ten layered membrane is bathed in vitreous humor and contains the cells necessary for transduction of photon energy. Usually this is a result of a retinal tear allowing fluid to pass through it and therefore causing the retina to detach from the underlying tissue layer.ĭiabetic retinopathy: Diabetic retinopathy is a diabetic complication that affects the eyes. The innermost layer of the eye is the retina. It is located in the center of the retina and contains the fovea. Its center is shifted slightly away from the optical axis (laterally, by 51.5 mm). Retinal detachment: A retinal detachment is usually indicated by a presence of fluid under the retina. The small sensitive area of the retina that gives central vision. Schematic diagram of the macula lutea of the retina, showing perifovea, parafovea, fovea, and clinical macula The macula is an oval-shaped pigmented area in the center of the retina of the human eye and other animal eyes. This commonly results in a sudden onset of flashes and floaters. You can explore the different regions of the zebrafish retina and overlying ectodermal structures, the lens and cornea by selecting one of the images below. This multilayered structure conveys visual information to the brain. Please contact before considering any use not covered by the terms of the agreement above.Retinal tear: When the vitreous (clear, gel-like fluid in the eye) shrinks and pulls at the thin tissue lining the back of the eye with enough force, it can cause a break or a tear in the retinal tissue. The retina Is composed of the neural retina and retinal pigmented epithelium.It is located in the center of the macula lutea of the retina. The fovea centralis is a small, central pit composed of closely packed cones in the eye. It shows a horizontal section through the right eye. When you find the resources you need, then part of the download process involves you (the user) ticking a box to let us (at ) know we both agree on how the material can be used. Photograph of the retina of the human eye, with overlay diagrams showing the positions and sizes of the macula, fovea, and optic disc Anatomical macula / macula lutea / area centralis (clinical: posterior pole ): Diameter 5.5mm (3.5 disc-diameters) (about 18 deg of VF) Demarcated by the superior and inferior temporal arterial arcades. View this anatomical diagram of the eye, showing the eye structure, including the pupil, iris, cornea, retina and optic nerve. Schematic diagram of the human eye, with the fovea at the bottom.All information, images and other assets displayed or made available for download are solely and exclusively to be used for personal, educational and non-profit purposes.This means there are limitations on how they can be used. Retinal Detachment vector illustration diagram, anatomical scheme. All information, images and other assets displayed and made available for download on the website are copyright. Structure of the human eye and organization of the retina.EXCEPTIONSĮxceptions to the above statement are made for personal, educational and non-profit purposes:īefore downloading, cutting and pasting or reproducing any information, images or other assets found on we ask you to agree to the following terms: In its natural state, the lens looks like an elongated sphere a shape known as ellipsoid that resembles a deflated ball. It is located behind the iris and in front of the vitreous body. ![]() ![]() Lee Eye Center provides complete eye examinations including a retinal examination to. The lens of the eye, also called the crystalline lens, is an important part of the eye’s anatomy that allows the eye to focus on objects at varying distances. No part of this website may be copied, displayed, extracted, reproduced, utilised, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical or otherwise including but not limited to photocopying, recording, or scanning without the prior written permission of MediaStudies Trust. Retina is the thin inside lining of the eyeball. Unless stated otherwise the author of all images and written content on is Ric Mann. Light, Colour, Vision & How To See More ( ) : Copyright © 2015-2022 : MediaStudies Trust.
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