Astigmatism and Presbyopia

Question 1

“Presbys” means what?

Answer 1

Old

Question 2

Ciliary muscle is also known as what muscle?

Answer 2

Autofocus

Question 3

Virtually no accommodation ability remains

Answer 3

Absolute Presbyopia

Question 4

The condition in which near vision difficulties result from an apparent decrease in the AA in dim light.

Answer 4

Nocturnal Presbyopia

Question 5

The inability of the human eye to focus on objects up close that results with aging.

Answer 5

Presbyopia

Question 6

Condition which can still be overcome by a hard or forced ciliary effort.

Answer 6

Facultative Presbyopia

Question 7

The earliest stage at which symptoms or clinical findings document the near vision effects of the condition.M

Answer 7

Incipient Presbyopia

Question 8

It is a corneal inlay treatment for presbyopia, is 3-mm in diameter and about 15 microns thick.

Answer 8

Flexivue Microlens

Question 9

The Presbylens may not give a better overall range of vision than standard mono vision. True or False?

Answer 9

False

May give

Question 10

What age does Presbyopia usually starts?

Answer 10

40-50

Question 11

Presbyopia is also known as?

Answer 11

Short arm syndrome

Question 12

“Ops” means what?

Answer 12

Eye

Question 13

Theory in which the amount of ciliary muscle contraction required to produce a unit change in acc. remains constant with age.

Answer 13

H-H-G Theory or Helmholtz-Hess-Gullstrand Theory

Question 14

Give at least two cause of sclerosis.

Answer 14

• Nutrtional Changes
• Action of UV rays
• Exposure to intense infrared radiation

Question 15

Inability to see far distances distinctly is one of Presbyopia’s symptoms. True or False?

Answer 15

False

Near

Question 16

The crystalline lens has an unequal curvature on the surface or in its layers

Answer 16

Lenticular Astigmatism

Question 17

One of the principal meridians is focused on the retina and the other is not focused on the retina

Answer 17

Simple Astigmatism

Question 18

When both principal meridians are focused either in front or behind the retina

Answer 18

Compound Astigmatism

Question 19

Infants are born with ATR astigmatism. True or False?

Answer 19

True

Question 20

Refractive condition in which a variation of power exists in different meridians of the eye.

Answer 20

Astigmatism

Question 21

The major source of astigmatism is held to be the _____?

Answer 21

Anterior surface of the cornea

Question 22

What surface may exhibit some irregularity?

Answer 22

Fundus

Question 23

Something different from another of the same type.

Answer 23

Variation

Question 24

The basic correction for astigmatism consists of what power?

Answer 24

Cylindrical

Question 25

How is astigmatism diagnosed?

Answer 25

• Keratometry
• Visual acuity
• Refraction

Question 26

Different types of astigmatism are classified based on the length of the cornea. True or False?

Answer 26

False (shape)

Question 27

The first accurate description of astigmatism as such is credited to?

Answer 27

Thomas Young

Question 28

He was the first one to produce a distance test charts for Astigmatism.

Answer 28

John Green

Question 29

The cornea has unequal curvature on the anterior surface

Answer 29

Corneal astigmatism

Question 30

When one of the principal meridians is focused behind the retina and the other is focused on the retina

Answer 30

Simple Hyperopic astigmatism