COA Flashcards - Visual Assessment 8% of exam
If the patient perceives light and can indicate the source direction, the vision is recorded as ____
Light perception with projection (LP w/P)
The visual acuity notation 20/200 indicates the patient could see the 200 optotype at _____ feet
20
The distance of 20 feet is used in visual acuity assessment because it approximates _____.
Optical infinity
A visual acuity value of 20/40 is expressed as the metric equivalent _____ .
6/12
The pinhole acuity test is used to confirm whether a _____ _____ is the cause of a decrease in visual acuity.
Refractive error
Jaeger notation, the point system and the Snellen M Unit are units of measure used in recording _____ visual acuity.
Near
In visual assessment the acronym PAM represents the principal testing device known as the _____.
Potential acuity meter
The ability of human vision to discern shapes by their relative lightness and darkness is termed _____.
Contrast sensitivity
During visual acuity assessment the patient is able to clearly read the 20/20 line but misses one letter, the acuity is recorded
as _____.
20/20-1
Why is it important to observe the patient during visual acuity testing?
To ensure proper occlusion
While assessing visual acuity the assistant notes the patient consistently misses the optotypes on the temporal side of the chart, indicating a possible _____.
Visual field defect
In visual acuity assessment the brightness acuity tester (BAT) is used to evaluate _____ when there are opacities in the ocular media
Glare
In patients with nystagmus visual acuity often improves dramatically when visual is assessed _____.
Binocularly
At what distance are adult near visual acuity charts designed to be read?
14-16 inches from the eye
Normal visual acuity in a two-month old infant may be estimated by?
Fixation (follow at 3-months)
