Diagram of parts of the eye

View more eye diagrams. The National Eye Institute (NEI) is part of the National Institutes of Health (NIH) and is the Federal government’s lead agency for vision research that leads to

sight-saving treatments and plays a key role in reducing visual impairment and blindness. EyeballOrbitAppendagesNerves of The EyeThe eyeball is a round gelatinous organ that contains the actual optical apparatus. It is approximately 25 mm in diameter and sits snugly in the orbit where six muscles control its movement. The eyeball has three layers, each of which has several important structures that are essential for the sense of vision.See more on healthhype.com How The Eye Works. The iris of the eye functions like the diaphragm of a

camera, controlling the amount of light reaching the back of the eye by automatically adjusting the size of the pupil (aperture). The eye's crystalline lens is located directly behind the pupil and further focuses light. Through a process called accommodation, Author: Cassidy Smith is a thick, watery substance that fills the space between the lens and the cornea. Vitreous humor. is the transparent, colorless, gelatinous mass that fills the space between the lens of the eye and the

retina lining the back of the eye. Parts of the Eye Diagram | Quizlet. The External Eye. Instructions Click the parts of the eye to see a description for each. Hover the diagram to zoom. Eyelid An eyelid is a thin fold of skin that covers and protects the eye. Pupil The pupil is

the opening in the centre of the iris that regulates the amount of light entering the eye. Author: Cassidy Smith Parts of the Eye. Behind the anterior chamber is the eye’s iris (the

colored part of the eye) and the dark hole in the middle called the pupil. Muscles in the iris dilate (widen) or constrict (narrow) the pupil to control the amount of light reaching the back of the eye. Directly behind the pupil sits the lens. Eye Conditions. Your eye is “too long” for the lens, so light won’t focus properly on your retina. Optic neuritis: The optic nerve becomes inflamed, usually due to an overactive immune system. The result: Pain and vision loss, typically in one eye. Pterygium: A thickened mass usually on the inner part of your eyeball. Mission Statement. As part of the federal government’s National Institutes of Health (NIH), the National Eye Institute’s mission is to “conduct and support research, training, health information dissemination, and other programs with respect

to blinding eye diseases, visual disorders, mechanisms of visual function, preservation of sight, and the special health problems and requirements

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