Anisometropia and Aniseikonia

Question 1

Greek: “unequal images”. It is a binocular condition, so the image in one eye is perceived as different in size compared to the image in the other eye.

Answer 1

Aniseikonia

Question 2

Designed iseikonic lenses for aniseikonia

Answer 2

Von Rohr

Question 3

Condition in which the size and shape of the ocular images are equal

Answer 3

Iseikonia

Question 4

Lenses which correct aniseikonia and include also the correction of refractive error.

Answer 4

Iseikonic Lenses

Question 5

Eyes are gazing in a certain direction and images are different in size.

Answer 5

Static Aniseikonia

Question 6

Eyes have to rotate a different amount to gaze at the same point in space

Answer 6

Dynamic Aniseikonia

Question 7

The size of one ocular image is symmetrically larger that the other.

Answer 7

Overall

Question 8

The size of one ocular image is symmetrically larger that the other in one meridian only

Answer 8

Meridional

Question 9

Variation in size differ from different positions of the visual field

Answer 9

Asymmetrical

Question 10

Image distortion decreases progressively in both directions

Answer 10

Barrel

Question 11

Image difference increases progressively in one direction

Answer 11

Prismatic

Question 12

Defined as a condition in which the refractive status of one eye differs from that the other.

Answer 12

Anisometropia

Question 13

The condition in which the refractive status is equal in the two eyes.

Answer 13

Isometropia

Question 14

A form of anisometropia in which one eye is myopic and the other hyperopic.

Answer 14

Antimetropia

Question 15

It is a condition in which the refractive power of the two eyes is unequal.

Answer 15

Absolute anisometropia

Question 16

It is that type of refractive anomaly in which although the total refraction of the two eyes is equal, the component elements in each show relatively large differences. In other words, the total refraction of the two eyes can be equal, but the axial length may be different.

Answer 16

Relative anisometropia

Question 17

A type of absolute anisometropia where one eye is normal and the other is either hypermetropic or myopic.

Answer 17

Simple

Question 18

A type of absolute anisometropia when both eyes are astigmatic but of unequal degree.

Answer 18

Compound Astigmatic Anisometropia

Question 19

A clinical test mainly used for assessing a patient’s degree of “binocular vision” and “binocular single vision”.

Answer 19

Worth Four Light Test

Question 20

This is when a person has double vision

Answer 20

Diplopia