Quiz 1 Flashcards
Visual acuity measurements should be taken on every patient before any test is performed or drug administered.
True *
False
Using a 67 cm working distance, neutrality is found with a +1.00 lens in front of the eye. What is the refractive error?
Myopia *
Hyperopia
Astigmatism
Presbyopia
Neutrality can be verified by moving in to see _____ motion and moving out to see _______ motion.
Against/Against
Against/With
With/With
With/Against *
An “against” reflex is neutralized with a _______ lens.
plus
minus *
cylindrical
bifocal
As we approach neutrality during retinoscopy, two characteristic changes in the reflex are:
faster, duller
slower, duller
faster, brighter *
slower, brighter
If a working lens is used during retinoscopy, then no compensation is necessary.
True *
False
During retinoscopy, the neutral zone is found with a +3.50 D lens in front of the eye. The working distance is 50 cm. What is the objective Rx with compensation?
+3.50 D
+2.00 D
+5.50 D
+1.50 D *
The closer the retinoscopic reflex to neutral, the duller the reflex is.
True
False *
The retinoscope’s streak is always ______ to its axis.
parallel
perpendicular
oblique *
plane
If the working distance is 67 cm, then ______ D should be added to the gross retinoscopy.
-1.50 *
-1.75
+1.50
+1.75