Skip to content

Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.
The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.
Updates regarding government operating status and resumption of normal operations can be found at OPM.gov.

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

Cataract Severity

Last updated: August 24, 2023