Examlex
In a reflecting telescope the objective is a ____.
Sclera
The white outer layer of the eyeball, providing structural support and protection for the eye.
Choroid
A vascular layer of the eye located between the sclera and the retina, which provides oxygen and nutrients to the outer retina.
Cornea
The clear, outer layer at the front of the eye that helps focus incoming light onto the retina.
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