Briefly explain how the eye focuses light on the retina

Expert Solution

Light rays pass through a dense , transparent gel like substance called the vitreous which fills the globe of eye ball and helps the eye ball to hold its spherical shape.
In a normal eye, all the light rays come to a sharp focusing point on the retina. The retina functions like the film in a camera.
It is responsible for capturing all of the light rays, processing them into light impulses through millions of tiny nerve endings, then sending these light impulses through over a million nerve fibers to the optic nerve.
Cornea and lens help in focusing of the light rays on the retina.But sometimes an additional galsses are required to focus clearly.
Eye is like a camera , the iris and pupil control how much light should be entered into the eye.
Because of the keratoconus cornea , which is irregular and cone shaped ,light rays entered into the ye at different angles and donot focus on one point on retina, but on many different points causing a blurred , distorted images.

Sydney Mullin answered 1 year ago

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