Visual Assessment

Question 1

What is VA 6/24 (metric system) converted to english system?

Answer 1

20/80
6m = 20 feet
24m divided by 6m = 4m x 20(english sys) = 80

Question 2

Super Pinhole test

Answer 2

requires a dilated pupil

Question 3

Corneal transplant

Answer 3

often restores excellent vision in patients with corneal scars

Question 4

HVF test points are presented by

Answer 4

static testing

Question 5

Visual Potential Tests

Answer 5

bypass opacities in ocular media to measure potential of retina and optic nerve

Question 6

Near acuity is measures

Answer 6

monocularly w/distance correction w/additional plus power lens

Question 7

Ocular media

Answer 7

cornea, lens, vitreous

Question 8

Brightness Acuity Test (BAT)

Answer 8

method of demonstrating pt’s complaints regarding decreased visual acuity in bright light

Question 9

Potential Acuity Meter (PAM)

Answer 9

projects Snellen acuity chart through window in the media opacity

Question 10

20/40
20 =
40 =

Answer 10

20 = distance at which test performed
40 = distance which normal eye could see that size letter

Question 11

What can affect the clarity of the cornea?

Answer 11

Scars and edema

Question 12

5 layers of the cornea

Answer 12

Epithelium
Bowman's layer
Stroma
Descements Membrane
Endothelium