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15 cards from this deck
Lens changing shape to focus on near/distant objects
Light sensitive cells that send impulses when stimulated
Carries impulses from retina to brain
See-through layer that bends & focuses light onto retina
Smaller (circular muscles contract, radial relax)
Larger (circular relax, radial contract)
Contract (suspensory ligaments loosen)
Thicker and more curved
Relax (suspensory ligaments tighten)
Thinner
Lens too curved, distant objects appear blurry
Lens too flat, cannot refract light enough
Concave lenses (spread out light)
Convex lenses (bring rays together)
Reduces cornea thickness (refracts light less)
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