Describe how light is refracted and focused on the retina in an emmetropic eye
What will be an ideal response?
The greatest degree of refraction occurs as light passes from air through the cornea. Additional refraction occurs as light passes through the lens, but less than at the cornea due to the density of the lens. In an emmetropic eye, light from distant objects pass nearly parallel into the eye and need little refraction to be focused on the retina. The cornea provides most of the necessary refraction and the lens, in its flattened shape, provides the rest.
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