Question

What are the two defects of eyes in seeing near and far objects called as?
Give one correction method for each.
[4 marks]

Answer 1

1. Some persons can see near objects clearly but cannot see distant objects distinctly. This defect is known as myopia. Concave lens is used for correction. [2 marks]
2. On the other hand, some people face difficulty while trying to see near by objects clearly, but they can see the distant objects well. This defect is known as hypermetropia. Convex lens is used for correction. [2 marks]