Question

the lens is a part of the eye: that refracts images to improve vision, but cannot change its own shape. that gives the eyes their unique shade. that changes its curvature to maximize focus. where visual transduction starts to happen.

Explanation:

• Option 1: The lens can change its shape (accommodation), so this is incorrect.
• Option 2: The iris gives the eye its unique shade, not the lens, so this is incorrect.
• Option 3: The lens changes its curvature (through accommodation) to adjust focus on near or far objects, maximizing focus. This is correct.
• Option 4: Visual transduction starts in the retina (with photoreceptors like rods and cones), not the lens, so this is incorrect.

Answer:

C. that changes its curvature to maximize focus.