1 • CORNEA
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A curved band of strong, clear tissue on the surface of the eye, the cornea focuses light onto the retina. |
Common Refractive Errors
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2 • EPITHELIUM
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The epithelium provides a thin protective layer for the cornea and heals very quickly when disturbed. |
3 • IRIS
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The coloured part of the eye is actually a muscle that controls the size of the pupil. |
4 • PUPIL
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The black circular area in the middle of the eye controls the amount of light reaching the retina. |
5 • RETINA
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A membrane on the inner wall of the eye, similar to the film in a camera, the retina changes light into images that are transferred to the brain via the optic nerve. |
6 • SCLERA
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The outer white coat of the eye, the sclera also provides protection. |
7 • LENS
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A natural lens behind the pupil changes shape to allow the eye to focus. As a result of aging, the natural lens hardens, resulting in presbyopia, the loss of reading vision. |
