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A chain-weighted index recognizes the fact that the composition of output changes over time.
Cornea
The transparent front part of the eye that covers the iris, pupil, and anterior chamber, responsible for focusing most of the light that enters the eye.
Retina
A light-sensitive layer at the back of the eye that converts light images into nerve signals that are sent to the brain.
Pupil
The circular opening in the center of the iris of the eye, which regulates the amount of light that enters.
Lens
A transparent optical component that focuses or disperses light rays, used in a variety of devices such as glasses, cameras, and microscopes to enhance vision or capture images.
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