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module menu icon Inside the eye

To understand how common conditions can affect the eyes, it’s important to understand the eye’s structure and how it works.

Sight is actually a series of events triggered by light. When light is reflected from an object, it passes through the pupil at the front of the eye and is focused by the lens onto the retina at the back. Cells in the retina convert this information into a signal that travels via the optic nerve to the brain. Click next to read about each part of the eye.