Examlex
The solar constant has a value of approximately 1372 watts per square meter.
Ciliary Muscle
Within the ciliary body of the vertebrate eye, the ciliary muscle controls the shape of the lens.
Iris
Muscular ring that surrounds the pupil and regulates the passage of light through this opening.
Pupil
Opening in the center of the iris of the vertebrate eye.
Retina
The light-sensitive layer of tissue at the back of the inner eye, which converts light images into electrical signals sent to the brain.
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