Question

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? 

 

Hint:

Presbyopia typically affects people over the age of 40 and can be corrected with optical aids such as glasses or contact lenses.

Answer 1

(a) Name the eye disorder she is suffering from. 
The eye disorder Tara's grandmother is suffering from is known as Presbyopia. This is an age-related disorder where the ability to focus on nearby objects decreases due to the hardening of the lens and weakening of the eye's ciliary muscles. 
(b) How can the above defect be corrected? 
Presbyopia can be corrected using bifocal or reading glasses, or in some cases, contact lenses. These help to focus on nearby objects by compensating for the loss of accommodation.
(c) Where is the image formed in the above disorder? 
In presbyopia, the image is formed behind the retina due to the inability of the eye lens to change its shape adequately to focus on close objects.