Normal Action Of The Eyes

Question 1

Accomodation

Answer 1

Process whereby the eyes make adjustments for seeing objects at various distances, include contraction (narrowing) and dilation (widening) of the pupil, movement of the eyes, and changes in the shape of the lns

Question 2

Convergence

Answer 2

Simultaneous inward movement of the eyes toward each other, occurs in an effort to maintain single binocular vision as an object comes nearer

Question 3

Emmetropia

Answer 3

Normal relationship between the refractive power of the eye and the shape of the eye that enables light rays to focus correctly on the retina

Question 4

Refraction

Answer 4

Ability of the lens to bend light rays so they focus on the retina

Question 5

Visual acuity

Answer 5

Ability to distinguish object details and shape at a distance