List two causes of presbyopia. Draw labelled diagram of a lens used for the correction of this defect of vision.
Causes of Presbyopia :
(i) Ageing
(ii) beaking of ciliary muscles
It is treated by using a trifocal lens both concave and convex
CBSE Class 10, 12 result process revised; answer book photocopy now comes before re-evaluation
CBSE Class 10 result 2025 not expected this week, 'confirms' Board amid ruckus over result date
Create Your Account
To keep connected with us please login with your personal information by phone
Dont't have an account? Register Now