After testing the eyes of a child, the optician has prescribed the following lenses for his spectacles:
Left eye : + 2.00 D
Right eye : + 2.25 D
The child is suffering from the defect of vision called:
(a) short-sightedness
(b) long-sightedness
(c) cataract
(d) presbyopia

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Solution

(b) long-sightedness

The optician has prescribed convex lenses for the child's spectacles, because a convex lens is used to increase the converging power of the eye lens. This shows that the child is suffering from the defect of vision called long-sightedness.

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After testing the eyes of a child, the optician has prescribed the following lenses for his spectacles: Left eye : + 2.00 D Right eye : + 2.25 D The child is suffering from the defect of vision called: (a) short-sightedness (b) long-sightedness (c) cataract (d) presbyopia

(b) long-sightedness The optician has prescribed convex lenses for the child's spectacles, because a convex lens is used to increase the converging power of the eye lens. This shows that the child is suffering from the defect of vision called long-sightedness.

After testing the eyes of a child, the optician has prescribed the following lenses for his spectacles:
Left eye : + 2.00 D
Right eye : + 2.25 D
The child is suffering from the defect of vision called:
(a) short-sightedness
(b) long-sightedness
(c) cataract
(d) presbyopia

(b) long-sightedness

The optician has prescribed convex lenses for the child's spectacles, because a convex lens is used to increase the converging power of the eye lens. This shows that the child is suffering from the defect of vision called long-sightedness.