Question

What are the causes of the following defects of vision and how can they be corrected?

a) Cataract b) Preshyopia​

Answer 1

Answer:

a) cataract is caused due to ageing in this case the eye lens turns milky and damages the vision this can be corrected by surgical procedures

b) presbyopia is also caused in aged people where people can not see the far objects and the near objects to them this can be corrected by a bifocal lens