HEENT 13 Anatomy of the Eyes

Question 0

Defective or damaged rods results in ____

Answer 0

problems seeing in the dark and at night

Question 1

Defective or damaged cones result in ____

Answer 1

Color deficiency

Question 2

When the incoming light from a far away object focuses before it gets to the back of the eye
Cornea is too steeply curved or the axial length of the eye is too long

Answer 2

Myopia (nearsightedness)

Question 3

When the incoming light from something far away has not focused by the time it reaches the back of the eye
Cornea is too flatly curved or the axial length is too short

Answer 3

Hyperopia (farsightedness)

Question 4

Nonspherical curvature of the cornea or lens causes light rays to focus at different points

Answer 4

Astigmatism

Question 5

Loss of the lens’ flexibility/ability to change shape to focus on near objects due to aging
Typically, it becomes noticeable by the time a person reaches his/her 40s

Answer 5

Presbyopia

Question 6

One or more surfaces of the cornea or lens are not spherical. Instead they are cylindrical or toric (shaped more like the side of a football)
As a result, there is no distinct point of focus inside the eye but, rather, a smeared or spread-out focus

Answer 6

Astigmatism

Question 7

Lazy eye is known as

Answer 7

Strabismus