For each visual disturbance A–E, select the most appropriate option from the following list

A. Option 4 A condition where visual images do not fall on corresponding retinal points. This is squint.

B. Option 5 Double vision. This is usually caused by problems in the control of the exter-nal ocular muscles which interfere with the ability of the eyes to form images on corre-sponding retinal points.

C. Option 3 Loss of vision. It may be partial or complete.

D. Option 1 A blind spot. Visual impairment with a scotoma depends on its location on the retina. Central scotomas are more disabling than peripheral scotomas.

E. Option 2 Inability to see in the dark. Night blindness is seen where there is a defi-ciency of Vitamin A that is needed for the production of rhodopsin.