eye cataracts glaucoma |
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| navigate by keyword : anatomy cataract cataracts cornea cross eyeball glaucoma human iris macula nerve optic sight vision |
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| Cross section views of the human eye, showing normal anatomy left, glaucoma top right, and cataracts bottom right. Glaucoma is caused by a buildup of fluid that increases pressure in the eyeball, damaging the optic nerve. A cataract is caused by changes in proteins that cause the lens to become opaque. |
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