presbyopia
accommodation
near-sightedness
far-sightedness
The human eye adjusts its lens focal length to focus on objects at different distances, a capability known as accommodation.
Therefore, option (b), accommodation, is the correct response.
Tara's grandmother is 70 years old and has a passion for embroidery. She faces difficulty in threading the needle as the eye of the needle appears blurred. The ophthalmologist diagnosed it as an age-related disorder. 
(a) Name the eye disorder she is suffering from.
(b) How can the above defect be corrected?
(c) Where is the image formed in the above disorder?