In a normal eye, light passes through the pupil and is focused by the
lens onto the retina at the back of the eye. The retina converts light into
electrical impulses that are carried to the brain. The brain
interprets the impulses as visual images.
| By | Healthwise Staff |
| Primary Medical Reviewer | E. Gregory Thompson, MD - Internal Medicine |
| Specialist Medical Reviewer | Steven T. Charles, MD - Ophthalmology |
| Last Revised | July 20, 2011 |
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