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Question 1

What is vision

Answer 1

To perceive and interpret their surrounding environment through their eyes

Question 2

What are the dioptric system of the eye

Answer 2

Cornea, Aqueous humor, crystalline lens, vitreous humor

Question 3

what are the different refractive errors

Answer 3

myopia, hyperopia, astigmatism, presbyopia

Question 4

concave lens is used to correct?

Answer 4

myopia

Question 5

convex lens is used to correct?

Answer 5

hyperopia

Question 6

what are the causes of myopia

Answer 6

long axial length, steep corneal curvature, steep crystalline lens curvature

Question 7

causes for hyperopia

Answer 7

short axial length, flat corneal curvature, flat crystalline lens curvature

Question 8

what is simple myopic astigmatism

Answer 8

one of the principal meridian is formed on the retina while the other is formed in front of the retina

Question 9

compound myopic astigmatism

Answer 9

both meridians are formed in front of the retina.

Question 10

simple hyperopic astigmatism

Answer 10

one meridian is formed on the retina while the other is formed behind the retina.

Question 11

mixed astigmatism

Answer 11

one meridian is formed on in front of the retina while the other is formed behind the retina

Question 12

compound hyperopic astigmatism

Answer 12

both meridians are formed behind the retina

Question 13

cataract

Answer 13

clouding of the crystalline lens which is often due to aging

Question 14

glaucoma

Answer 14

increased pressure within the eye which could damage the optic nerve

Question 15

AMD

Answer 15

cause blurred or distorted vision