Tonometry Exam 66 Questions with Complete
Answers.
When cleaning the applantation tonometer, one must be careful not to:
A- Remove the biprism
B- Bend the pressure sensitive arm
C- Turn the adjustment knob
D- Cause scleral rigidty - Correct Answers B- Bend the pressure sensitive arm
The applanation tonometer unit itself may be cleaned by:
A- Immersing in 3% hydrogen
B- Spraying and wiping with electronics cleaner
C- Gently wiping with damp cloth and mild soap
D- Sparying with disinfectant - Correct Answers C- Gently wiping with damp cloth and
mild soap
The tonometer tip should be cleaned:
A- Prior to being sterilized
B- Prior to being autoclaved
C- Prior to being boiled
D- Prior to being disinfected - Correct Answers D- Prior to being disinfected
The tonometer top should be disinfected:
A- Morning and night
B- First thing each day
C- Every 10 minutes
D- Between each patient - Correct Answers D- Between each patient
To best disinfect the tonometer tip, one should:
A- Wipe it with a moist tissue
B- Swipe it with an alcohol wipe
C- Put it in a 10 minute soak in 3% hydrogen peroxide
D- Place it in the autoclave for 15 minutes - Correct Answers C- Put it in a 10 minute
soak in 3% hydrogen peroxide
With regular use, soaking the tonometer tip in alcohol:
A- Will not affect it
B- Will cause the numbers to fade
C- Will cause etching on the face
D- Will cause the plastic to soften - Correct Answers B- Will cause the numbers to fade
Failure to properly rinse the tonometer tip after disinfecting and prior to using it could
result in:
A- Corneal chemical burn
B- Inaccurate readings
, C- Etching on the tips surface
D- Clouding of the mires - Correct Answers A- Corneal chemical burn
Check calibration on the Goldmann applanation tonometer by:
A- Placing the tip on a test block
B- Measuring an eye of known pressure
C- Use of calibration bar
D- Returning it to the manufacturer - Correct Answers C- Use of calibration bar
When calibrating the Goldmann applanation tonometer at the 2 setting, the tonometer
head should move:
A- No more than 0.50 from the test position
B- 1.0 from the tested position
C- Freely in every position
D- Not at all - Correct Answers A- No more than 0.50 from the test position
The test positions for calibration of the Goldmann applanation tonometer are:
A- 0,22, and 45 mm Hg
B- 0,20, and 60 mm Hg
C- 10,20, and 50 mm Hg
D- 0,using the test block - Correct Answers B- 0,20, and 60 mm Hg
If you are calibrating an applanation tonometer for the 20 mm Hg setting, the drum will
read:
A- 1
B- 2
C- 4
D- 5 - Correct Answers B- 2
If the applanation tonometer falls outside of the calibration allowance:
A- Add or subtract from the final reading to offset the problem
B- Bend the tonometer arm until calibration is secure
C- Turn the screw in the tonometer arm until calibration is accurate
D- Return the tonometer to the manufacturer for calibration - Correct Answers D- Return
the tonometer to the manufacturer for calibration
The applanation tonometer measures intraocular pressure (IOP) by:
A- Measuring the amount of pressure needed to indent the cornea
B- Measuring the amount of time needed to flatten the cornea
C- Measuring the IOP directly
D- Measuring the amount of pressure needed to flatten the cornea - Correct Answers D-
Measuring the amount of pressure needed to flatten the cornea
IOP as measured by applanation is recorded as:
A- mm Hg
B- gm/mm
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