POST TEST FOR MODULE 14:   Visual Fields - Automated, What the Printout tells us about Reliability            Catalog       Home

To print this test:  Go to the "File" menu of the window in which this appears and click "print".

Instructions:  This is an "open-book" test,  meaning you can refer to the module while answering the questions.  Use this printed version for your convenience when referring back to the module information.  

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1. Almost all of the visual field defects caused by glaucoma occur:

A. close to the blind spot

B. within the macula

C. within the central 30 degrees of the field

D. in the far periphery

2. If "fixation monitoring" is turned off on the Humphey Field Analyzer, the patient's fixation can be monitored by:

A. observing "false positives"

B. observing "false negatives"

C. observing the patient's response pattern

D. observing the patient's eye movements in the monitor

3. Gaze Tracking on the Humphrey Field Analyzer does not work well with:

A. small pupils

B. droopy eyelids

C. strong prescriptions in the lens holder

D. all of the above

4. The Heijl- Krakau method tests fixation by:

A. flashing a bright stimulus in the physiological blind spot

B. a laser tracking system

C. monitoring the corneal light reflex

D. viewing the patient's eye in the monitor

5. An "XX" printed after "Fixation losses" on the HFA printout indicates that:

A. fixation losses have exceeded 50%

B. fixation losses have exceeded 20%

C. fixation was not tested

D. there were no fixation losses

6. When testing for false positives, the field machine:

A. follows the corneal reflex

B. moves the projector but does not present the stimulus

C. turns the background illumination off

D. measures the time between presentation and response

7. A false negative can be caused by:

A. a "trigger happy" patient

B. a patient dozing off

C. an alert patient with significant field loss

D. B or C

8. An exceptionally long testing time on the automated perimeter:

A. may lead to patient fatigue and decreased reliability

B. may be the result of significant field loss

C. indicates a more reliable test

D. A and/or B

9. For foveal threshold testing, the patient looks at:

A. the center of the diamond fixation pattern

B. the central fixation target

C. a moving fixation target 

D. a blank screen

10. A pupil diameter of less than 2mm: 

A. will decrease that patient's central acuity

B. will increase the sensitivity of the visual field

C. can cause a "diffuse depression" of the overall visual field

D. will have no effect on the visual field

11. When calculating the trial lens power for the HFA, the spherical equivalent is used in place of cylinder powers from: 

A. .50 to 1.25

B. 1.25 to 2.00

C. 2.00 to 3.00

D. 2.00 to 5.00

12. When calculating the trial lens power for the HFA,  for a 60 year old patient ____ is added to the distance correction.

A. +2.50

B. +3.25

C. +4.00

D. +5.00

13. On the dB graph, presentation of the brightest stimulus is represented by the number:

A. 0

B. 30

C. 50

D. 100

14. On the dB graph, readings of ____ or higher indicate an unreliable test.

A. 30

B. 40

C. 50

D. 60

15. On the grayscale graph, areas of no response to the brightest stimuli are indicated by:

A. white

B. gray

C. red

D. black