POST TEST FOR MODULE 7: Retinoscopy in Plus-Cylinder         Catalog       Home

Including:
Section 1: Basic concepts
Section 2: Neutralizing spherical errors
Section 3: Neutralizing astigmatism with a plus-cylinder phoropter

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Section 1

1. Retinoscopy gives you a starting point for:

A. keratometry
B. auto-refractometry
C. refractometry
D. lensometry

2. Which are the most popular retinoscopes?

A. Copeland Optec 360
B. Smith and Wesson
C. Welch Allen
D. A and C

E. A and B

3. With the retinoscope in the "sleeve-up" position,  the streak will appear _______ at a distance of one foot away.

A. wide and out of focus
B. narrow and out of focus
C. narrow and in focus
D. like a circle

4. When the streak is moved across the 180 degree meridian, we are:

A. streaking 135
B. streaking 45

C. streaking 180
D. streaking 90

5. Which is not a good technique for retinoscopy?

A. sit as far back from the patient as is practical
B. scope the patient's left eye with your right eye
C. have the patient view a circle of light on the acuity screen
D. dim the room lights

Section 2

6. An against-motion reflex will appear to:

A. move in the opposite direction as the streak
B. move in the same direction as the streak
C. move up and down
D. move at a 45 degree angle to the streak

7. When performing retinoscopy,  we want to convert ________ before neutralizing.

A. myopes to hyperopes
B. hyperopes to myopes
C. against-motion to with-motion
D. with-motion to against-motion

8. When starting to streak an eye,  if you see a neutral looking reflex,  you should:

A. assume neutrality
B. convert it to against-motion
C. convert it to with-motion
D. stop, you are finished

9. To adjust for our working distance we must:

A. add .50 D cylinder power
B. subtract 1.5 D sphere power
C. add 1.0 D sphere power
D. subtract 1.5 D cylinder power

10. At neutrality,  the streak reflex appears to:

A. fill the pupil
B. disappear
C. move with the motion of the streak
D. move against the motion of the streak

Section 3

11. When performing plus-cylinder retinoscopy,  if we find astigmatism while streaking the 90 degree meridian,  the axis of the correcting cylinder will be at:

A. 180 degrees
B. 45 degrees
C. 135 degrees
D. 90 degrees

12. Finding a with-motion streak reflex at 45 and an against-motion streak reflex at 135 tells you that:

A. you did something wrong
B. there is astigmatism present
C. the eye is spherical
D. you have reached the endpoint

13. A basic rule of retinoscopy states that:  If you do not see with-motion in every meridian,  you should:

A. add plus cylinder power until you do
B. add plus sphere power until you do
C. add minus sphere power until you do
D. go get a cup of coffee

14. Which phenomenon confirms the axis of astigmatism?

A. thickness
B. intensity
C. break
D. all of the above

15. The streak reflex appears ________  when you are streaking the meridian of the correct astigmatic axis.

A. widest
B. dull
C. shortest
D. brightest