Refractive errors and visual acuity assessment Flashcards
1
Q
What is ametropia?
A
one or more of the optical parameters are less than perfect
into:
axial
and
refractive
leading to myopia or hypermetropia
2
Q
What is astigmatism?
A
where an eye is not completely symmetrical and hence light rays are not evenly bent
3
Q
What is presbyopia? How can it be corrected?
A
Long-sightedness in old age.
The inability to focus on near objects without glasses (loss of accommodation).
This can be corrected by positive lenses.
