some persons have difficulty to see the objects in dim light during night . this is due to the lack of vitamin A in the diet and improper functioning of rod shaped cells. the rod shaped cells respond to intensity variations in light. these days it is possible to correct the defect by using lenses
I) identify the type of lens
ii) the people with this defect of eye are treated with care and proper died. suggest two reasons
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no there is no disfunction in the eyeball nor the eye lens. so, lens will not help.
taking vitamin A will help in this disease that is night blindness
taking vitamin A will help in this disease that is night blindness
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