NURS 612 Exam 1 Weeks 1-3 Questions and
Correct Answers| Latest 2025
Risk factors for cataract formation - ✔✔family history
steroid medication use
exposure to ultraviolet light
cigarette smoking
diabetes mellitus
aging
legal blindness (Snellen chart) - ✔✔Vision not correctable to better than 20/200
blurred vision vs. diplopia - ✔✔burred vision represents a problem with visual acuity
diplopia is the perception of two images and may be monocular or binocular
-monocular = optical problem
-binocular = alignment problem
factors that affect visual acuity testing - ✔✔motivation, interest, literacy, intelligence,
and attention span
Describe the process of performing the Snellen acuity exam - ✔✔position patient 20
feet away from the chart
make sure that the chart is well lighted
test each eye individually by covering one eye
if testing the patient with and without corrective lenses, record the readings separately
and always test vision without glasses first
, Ask patient to identify all the letters, beginning at any line
determine the smallest line in which the patient can identify all of the letters and record
visual acuity designated by that line.
Visual acuity test fraction - ✔✔numerator indicates the distance of the patient from
the chart
denominator indicates the distance at which the average eye can read the line
pinhole test - ✔✔performed if the visual acuity is recorded at a fraction less than
20/20 to see if the observed decrease in acuity was caused by a refractive error.
-pinhole occluder held over the uncovered eye.
measurement of near vision - ✔✔have patient hold the Rosenbaum Pocket Vision
Screener at a comfortable distance (about 35cm/14inches) from the eyes and read the
smallest line possible.
confrontation test - ✔✔tests peripheral vision
sit or stand opposite the patient at eye level at a distance of about 3ft
ask the pt to cover the right eye while you cover your left eye.
fully extend your arm midway between the patient and yourself and wiggle your fingers
as you move your arm slowly centrally.
Have the patient tell you when the fingers are fist seen
compare the patient's response to the time you first note the fingers
Test nasal, temporal, superior, and inferior fields
LEsions most likely to produce abnormalities include stroke, retinal detachment, optic
neuropathy, pituitary tumor compression at the optic chiasm, and central retinal
vascular occlusion
Correct Answers| Latest 2025
Risk factors for cataract formation - ✔✔family history
steroid medication use
exposure to ultraviolet light
cigarette smoking
diabetes mellitus
aging
legal blindness (Snellen chart) - ✔✔Vision not correctable to better than 20/200
blurred vision vs. diplopia - ✔✔burred vision represents a problem with visual acuity
diplopia is the perception of two images and may be monocular or binocular
-monocular = optical problem
-binocular = alignment problem
factors that affect visual acuity testing - ✔✔motivation, interest, literacy, intelligence,
and attention span
Describe the process of performing the Snellen acuity exam - ✔✔position patient 20
feet away from the chart
make sure that the chart is well lighted
test each eye individually by covering one eye
if testing the patient with and without corrective lenses, record the readings separately
and always test vision without glasses first
, Ask patient to identify all the letters, beginning at any line
determine the smallest line in which the patient can identify all of the letters and record
visual acuity designated by that line.
Visual acuity test fraction - ✔✔numerator indicates the distance of the patient from
the chart
denominator indicates the distance at which the average eye can read the line
pinhole test - ✔✔performed if the visual acuity is recorded at a fraction less than
20/20 to see if the observed decrease in acuity was caused by a refractive error.
-pinhole occluder held over the uncovered eye.
measurement of near vision - ✔✔have patient hold the Rosenbaum Pocket Vision
Screener at a comfortable distance (about 35cm/14inches) from the eyes and read the
smallest line possible.
confrontation test - ✔✔tests peripheral vision
sit or stand opposite the patient at eye level at a distance of about 3ft
ask the pt to cover the right eye while you cover your left eye.
fully extend your arm midway between the patient and yourself and wiggle your fingers
as you move your arm slowly centrally.
Have the patient tell you when the fingers are fist seen
compare the patient's response to the time you first note the fingers
Test nasal, temporal, superior, and inferior fields
LEsions most likely to produce abnormalities include stroke, retinal detachment, optic
neuropathy, pituitary tumor compression at the optic chiasm, and central retinal
vascular occlusion
