The human eye can focus on objects at different distances by adjusting the focal length of the eye lens. This is due to the

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

Presbyopia

Power of Accommodation

Nearsightedness

Farsightedness

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Adjusting the focal length of the eye lens is due to the power of accommodation.
By altering the lens's shape, the eye can shift its focal point for distant and near objects (and vice versa). The accommodation of the eye is the mechanism by which a lens's focal length is changed to maintain an object's sharp focus on the retina when its distance from the eye changes.
On the other hand, presbyopia is due to the eye lens becoming less flexible, and the loss of the ability to focus on nearby as well as distant objects is the symptom of this defect. Whereas Nearsightedness is a vision defect in which a person can see near objects clearly, but the distant objects are blurry, and Farsightedness is a defect in which a person can see distant objects clearly while the near objects are blurry.

Watch 3-min video & get full concept clarity