Refractomy Terms

Question 1

What is presbyopia

Answer 1

Not having sufficient accommodation to bring near objects into focus (would require additional reading glasses, bifocals, or progressive lens)

Question 2

What is emmetropia

Answer 2

The absence of refractive error

Question 3

What is anisometropia

Answer 3

When there is a difference of refraction error between two eyes (2D or more), and can be myopic or hyperopia

Question 4

What is anisekonia

Answer 4

When there is a perceptible difference in image size between the two eyes (usually more than 3D)

Question 5

What is an Autorefractor

Answer 5

Is a test to measure for refractive error for the distance only

*a series of three measurements are taken