OPT 160 Study Guide LATEST UPDATE
2024 WITH CORRECT ANSWERS
RATED A+
A unit of measurement that expresses the refractive power of a lens is __________. -
CORRECT ANSWERDiopter
A concave lens is a lens whose surface is __________. - CORRECT ANSWERCurved
Inward
A ___________ lens is used to correct astigmatism. - CORRECT ANSWERCylindrial
lens
Astigmatism produces a refractive error due to __________. - CORRECT
ANSWERUnequal refraction along two meridians.
By convention, ________ is usually tested first for visual acuity. - CORRECT
ANSWEROD (right eye)
The standard testing distance for near vision (NVA) is - CORRECT ANSWER14-16
inches (35-40 cm)
If you test near vision with correction, abbreviate it as ________. - CORRECT
ANSWERNVcc or J/c
You should never use a soap solution or Windex on _____________. - CORRECT
ANSWERGlass Projector slides
Which is the worst visual acuity? - CORRECT ANSWERLP
A front surfaced mirror may be used in short exam rooms to simulate a chart at twenty
feet. Even special cleaning solutions may ____________. - CORRECT
ANSWERDestroy the mirror.
A pinhole will usually improve the vision that is caused by _____________. - CORRECT
ANSWERRefractive error.
In the expression 20/40, 40 refers to the distance and at which letters can be seen by
______________. - CORRECT ANSWERA person with normal vision.
2024 WITH CORRECT ANSWERS
RATED A+
A unit of measurement that expresses the refractive power of a lens is __________. -
CORRECT ANSWERDiopter
A concave lens is a lens whose surface is __________. - CORRECT ANSWERCurved
Inward
A ___________ lens is used to correct astigmatism. - CORRECT ANSWERCylindrial
lens
Astigmatism produces a refractive error due to __________. - CORRECT
ANSWERUnequal refraction along two meridians.
By convention, ________ is usually tested first for visual acuity. - CORRECT
ANSWEROD (right eye)
The standard testing distance for near vision (NVA) is - CORRECT ANSWER14-16
inches (35-40 cm)
If you test near vision with correction, abbreviate it as ________. - CORRECT
ANSWERNVcc or J/c
You should never use a soap solution or Windex on _____________. - CORRECT
ANSWERGlass Projector slides
Which is the worst visual acuity? - CORRECT ANSWERLP
A front surfaced mirror may be used in short exam rooms to simulate a chart at twenty
feet. Even special cleaning solutions may ____________. - CORRECT
ANSWERDestroy the mirror.
A pinhole will usually improve the vision that is caused by _____________. - CORRECT
ANSWERRefractive error.
In the expression 20/40, 40 refers to the distance and at which letters can be seen by
______________. - CORRECT ANSWERA person with normal vision.
