Explain about each with diagrams mentioned .
1. Myopia
2. Hypermetropia
3. Presbyopia.
and give suggestions what type of lens they have to use.
Answers
Answered by
3
Myopia:- A person who can suffering from myopia they can clearly see near object clearly but cann't see distant object........
Causes...:-1.) Excessive curvature of eye lens.
2.) Elongation of eye ball.
Correction:-
1.)Use of concave lens of appropriate power...
HYPERMETROPIA:-A person who can suffering from these disease can see far objects clearly bu cannot see nearby objects clearly...
CAUSES:-1.) Focal length of the eye lens becomes too long..
2.) Eyeball becomes too small.
CORRECTION:-Use of convex lens of suitable power...
PRESBYOPIA:-It is defect of vision due to which an old person cannot see the nearset objects clearly due to loss of power of accomodation of the eye....
CAUSES:- 1.)Gradual weakening of ciliarly muscles..
2.)Diminishing flexibility of eye lens...
CORRECTION:-Use of both concave and convex lens of suutable power...
HOPE ITS HELPFUL FOR U...
MARK IT ON BRAINLIST ^_^
Causes...:-1.) Excessive curvature of eye lens.
2.) Elongation of eye ball.
Correction:-
1.)Use of concave lens of appropriate power...
HYPERMETROPIA:-A person who can suffering from these disease can see far objects clearly bu cannot see nearby objects clearly...
CAUSES:-1.) Focal length of the eye lens becomes too long..
2.) Eyeball becomes too small.
CORRECTION:-Use of convex lens of suitable power...
PRESBYOPIA:-It is defect of vision due to which an old person cannot see the nearset objects clearly due to loss of power of accomodation of the eye....
CAUSES:- 1.)Gradual weakening of ciliarly muscles..
2.)Diminishing flexibility of eye lens...
CORRECTION:-Use of both concave and convex lens of suutable power...
HOPE ITS HELPFUL FOR U...
MARK IT ON BRAINLIST ^_^
Attachments:
Answered by
1
The first one is miopia (defect) and the second one is hypermetropia (defect)
Attachments:
Similar questions