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NIH Websites Are Changing

Beginning in late July, NIH will start introducing a new website experience designed to make it easier to find health information, research, funding opportunities, and other resources. During the transition, you may notice changes to navigation, page layouts, and where some information is located. Learn more in our Frequently Asked Questions.

Cataracts and the Eye

A cataract is a cloudy area in the lens of your eye that can cause vision problems. Click or tap the image below to explore how cataracts affect the eye. Look at the different parts of the eye and see the difference between mild, moderate, and severe cataracts.

Sclera Cornea Iris Pupil Lens Retina Optic Nerve
Sclera Cornea Iris Pupil Lens Retina Optic Nerve

Eye parts

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Cataract Severity

Last updated: August 24, 2023

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