What are the main parts of the human eye and what do they do?
The main parts of the human eye include the cornea, iris, pupil, lens, retina, and optic nerve. Each part plays a crucial role in the process of vision. The cornea and lens focus light onto the retina, while the iris and pupil control the amount of light entering the eye. The retina contains photoreceptor cells that convert light into electrical signals, which are then transmitted to the brain via the optic nerve for processing.
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