The human eye cannot focus on objects closer than 25 cm due to the ciliary muscles' limited contraction capacity. Objects positioned less than 25 cm away from the eye will appear indistinct and cause eye strain.
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?