{Foundations of Vision and Visual Impairment]
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Where is the conjunctiva located and what is its function?
A. Covers the pupil and iris for light protection
B. Thin, clear membrane lining the eyelid and covering the white of the eye
(except cornea)
C. Colored part of the eye controlling light intake
D. Transparent structure behind the cornea
What is the sclera’s role in visual anatomy?
A. White outer layer providing structure and contrast against the iris
B. Transparent covering that refracts light
C. Muscular tissue that focuses the lens
D. Layer of light-sensitive cells
Which eye structure provides most of the optical power of the eye?
A. Lens
B. Cornea
C. Retina
D. Sclera
, What is the main function of the iris?
A. Protects the retina from UV light
B. Contracts and dilates to regulate the amount of light entering the eye
C. Provides most of the eye’s focusing power
D. Houses photoreceptor cells
The ciliary muscle is responsible for what action?
A. Changing the shape of the lens for focusing at different distances
B. Controlling pupil dilation
C. Producing tears
D. Adjusting the retina’s curvature
What is the function of the choroid?
A. Provides mechanical support
B. Nourishes the retina through its blood vessels
C. Protects the eye from debris
D. Generates aqueous humor
What is the role of the retina in vision?
A. Converts light into electrical signals sent to the brain
B. Reflects light to enhance image brightness
C. Regulates the pupil size
D. Controls the shape of the eye
Which part of the eye focuses light onto the retina?
A. Lens
B. Cornea