OPT-2375 Refractometry Unit 1

Question 1

The ability of the eye to change its shape to focus at near is known as:

Answer 1

accommodation

Question 2

To see clearly, the eye’s optical system must form a point focus on the optic nerve of the retina

Answer 2

False

Question 3

All of the following are associated with hyperopia except:

Answer 3

distance between the lens and retina is too great

Question 4

The “Human Seeing System consists of 2 sets of lenses, 2 sensing devices and 1 brain and is used to describe how we see.

Answer 4

True

Question 5

The Crystalline Lens has 2 converging minus power surfaces

Answer 5

False

Question 6

The Fovea Centralis (macula) contains the highest percentage of cones in the retina.

Answer 6

True

Question 7

The average power of an eye in total is 43.00 Diopters.

Answer

Answer 7

False

Question 8

The main function of the Choroid is:

Answer 8

Nourishment

Question 9

More than 2/3 of the eye’s refractive power is due to the:

Answer 9

cornea

Question 10

The main function of the Sclera is:

Answer 10

Protection