Q. 245.0( 4 Votes )

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Answer :

Ciliary muscles is important because they helps in modifying the curvature of eye lens so that eye can focus objects which are at varying distances. The focal length is changed by contraction and relaxation of ciliary muscles. We are able to see nearby and also the distant object clearly by using bifocal lenses which consists of both concave and convex lens. The upper part of lens is Concave lens which is used for distant vision and the lower part of lens is convex lens which is for nearby objects. Bifocal lens are used in Presbyopia condition when the person can’t see distant as well as nearby objects.

(a) Akshay is suffering from Myopia defect in which the person can’t see distant objects clearly. Concave lens of suitable power is used to correct it.

(b) The teacher showed concerned and care towards the health of Akshay. Moreover, Salman has also showed helping and caring nature.

(c) Akshay should thank his teacher as well as Salman for the caring nature they showed towards him.

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