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Determine the main refraction region in the eye.
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- The pupil of a person's eye changes from a diameter of 3.5 mm to 1.5 mm as the illumination is increased. By what factor does the minimum angle of resolution change?Distance between the eye and eye chart must be 6 meter during examination of visual acuity. Why?Discuss image formation by describing refraction, accommodation, and constriction of the pupil.
