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Certified Ophthalmic Assistant

Subjects : certifications, health-sciences

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. _______ are not used in evaluating tear break-up time (TBUT)
5 minutes
red - green - and blue
tear filter papers
the cobalt blue filter

2. Just prior to the beginning of the TBUT test - the patient is instructed to...
red-green
blink
shine the light flatly from the side - in the plane of the iris
a narrow angle and bowed iris cast a shadow on the iris

3. In evaluating an axial length scan - the retinal echo must be...
a staining agent
to have little or no shadow
focus can he moved off-axis to obtain a clear reading
to the left of the scleral and orbital echoes

4. When performing the TBUT test - the observer is looking for...
posterior subcapsular cataract
the appearance of dry spots
a tall - central spike with only one peak and smaller spikes on either site
rods

5. The axial length of the eye is important in the calculation of...
more males than females
10 seconds
IOL power
20

6. How long should the patient be given to recognize the figure in a color plate?
varies according to the type of test
holding the probe perpendicular to the corneal surface
2 to 3 seconds
that the sound beam is directed to the optic disc and the measurement is incorrect

7. Color vision testing is used to detect all of the following except...
red - green - and blue
differentiate between congenital or acquired color blindness
dacryocystitis
the appearance of dry spots

8. The axial length of an average adult eye is...
normal tearing
patients who have had corneal refractive surgery
23 to 24 mm
severe dry eye

9. The photosensitive pigments of the eye are sensitive to...
tear filter papers
with the central cornea
red - green - and blue
the use of an anesthetic

10. When calculating intraocular lens (IOL) powers - one must enter...
can often be cured if the causative factor is eliminated
desired postoperative refraction
refractive error
central corneal thickness

11. Schirmer's test I is used to measure...
reflex tears
red-green
that the sound beam is directed to the optic disc and the measurement is incorrect
dacryocystitis

12. A TBUT of which of the following would indicate tear film dysfunction?
A-constant
refractive error
2.0 or more
10 seconds

13. With the 1OLMaster - the ideal signal-to-noise ratio is...
varies according to the type of test administered
2.0 or more
that the sound beam is directed to the optic disc and the measurement is incorrect
both eyes equally

14. You are inputting data for IOL calculations and notice that the K readings 44.5/42.75. This type of reading...
2 to 3 seconds
to have little or no shadow
A Schirmer's test of 10 mm or more is considered normal.
is acceptable

15. When using color plates - a score indicates abnormal color vision...
the appearance of dry spots
narrow beam
the cobalt blue filter
varies according to the type of test

16. Hereditary color vision defects usually affect...
both eyes equally
desired postoperative refraction
central corneal thickness
blink

17. When comparing the axial lengths of a patient's left and right eye - how much of a difference between the eyes should signal you to repeat the measurement of both eyes?
are based on the same general equation
0.3 mm
2.0 or more
severe dry eye

18. Hereditary color defects most often fall into which category?
shine the light flatly from the side - in the plane of the iris
ultrasound
infrared
red-green

19. Schirmer's test does not require _____ except Test strips
expensive equipment
3.0 D
white to white corneal diameter
2.0 or more

20. Young children can be tested using the color plates by...
having them trace the number/figure
0.3 mm
tear filter papers
10 seconds

21. Measuring time for the Schirmer's test is...
A Schirmer's test of 10 mm or more is considered normal.
5 minutes
10 seconds
expensive equipment

22. Which of the following should be color-vision tested one eye at a time?
holding the probe perpendicular to the corneal surface
dacryocystitis
10 seconds
suspected acquired color defect

23. When performing a brightness acuity glare test - it is best to do which of the following?
ultrasound
A-constant
Allow the patient to adjust to the light level before reading the letters.
to have little or no shadow

24. In slit-lamp assessment of the corneal periphery - the dark interval should be a minimum of approximately how much of the total corneal width for the angle to he considered open and safe for dilation?
with the central cornea
one-fourth
remove the instrument from use
rods

25. If a biometry instrument fails to calibrate properly - one should...
expensive equipment
to have little or no shadow
the patient should be tested with near correction - if worn
remove the instrument from use

26. Each of the following can cause an error in the axial length scan reading of the IOL Master except...
shine the light flatly from the side - in the plane of the iris
corneal endothelial drop-out
patient wearing spectacles
a tall - central spike with only one peak and smaller spikes on either site

27. A normally functioning lacrimal gland will produce by much wetting on a Schirmer's test strip after 5 minutes?

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28. The IOLMaster must be calibrated daily using a...

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29. Laser interferometry uses which type of laser light?
infrared
patients who have had corneal refractive surgery
red - green - and blue
narrow angles may precipitate an angle-closure glaucoma attack

30. A rose bengal does not require the use of...
the defect tends to remain stable over time
'test eye'
dacryocystitis
the cobalt blue filter

31. Estimating the anterior chamber depth with a penlight works because...
holding the probe perpendicular to the corneal surface
a narrow angle and bowed iris cast a shadow on the iris
reflex tears
to have little or no shadow

32. When calculating IOL power - each of the following are necessary except...
'test eye'
central corneal thickness
the cobalt blue filter
white to white corneal diameter

33. Color vision defects in children are frequently detected among those with...
suspected acquired color defect
IOL power
reading disabilities
a staining agent

34. The ideal IOLMaster axial length graph is...
one-fourth
a tall - central spike with only one peak and smaller spikes on either site
red - green - and blue
for screening purposes - such as job applications

35. Measuring corneal thickness via nonoptical pachymetry involves the use of...
before starting school
ultrasound
the use of an anesthetic
23 to 24 mm

36. When using a penlight to estimate anterior chamber depth - an open angle would appear...
are based on the same general equation
for screening purposes - such as job applications
more males than females
to have little or no shadow

37. This is not evaluated using rose Bengal except...
expensive equipment
blink
can often be cured if the causative factor is eliminated
corneal endothelial drop-out

38. When evaluating anterior chamber depth with the slit lump - the illumination technique used is...
remove the instrument from use
posterior subcapsular cataract
is acceptable
narrow beam

39. The IOLMaster evaluates each of the following except...
corneal endothelial drop-out
narrow angles may precipitate an angle-closure glaucoma attack
differentiate between congenital or acquired color blindness
refractive error

40. Glare testing is used to identify...
narrow angles may precipitate an angle-closure glaucoma attack
IOL power
decrease in vision due to glare conditions
the defect tends to remain stable over time

41. The type of pachymetry used to evaluate a glaucoma suspect is...
focus can he moved off-axis to obtain a clear reading
refractive surgery
central corneal thickness
the patient should be tested with near correction - if worn

42. Hereditary color vision defects affect...
A-constant
desired postoperative refraction
more males than females
the patient is shown a sample that is discernable to normal and abnormal alike

43. The Schirmer's test might be indicated in all of the following except...
dacryocystitis
IOL power
with the central cornea
to the left of the scleral and orbital echoes

44. In which of the following would glare testing be most appropriate?
having them trace the number/figure
suspected acquired color defect
white to white corneal diameter
posterior subcapsular cataract

45. An A-Sean can he artificially shortened due to...
more males than females
the appearance of dry spots
pressing on the globe too hard with the probe
5 minutes

46. Pachymetry readings are routinely taken prior to...
0.3 mm
with the central cornea
refractive surgery
having them trace the number/figure

47. Illumination for the color plates test...
varies according to the type of test administered
differentiate between congenital or acquired color blindness
red - green - and blue
the defect tends to remain stable over time

48. Rose bengal is...
shortened axial length due to compression
the appearance of dry spots
545 pm
a staining agent

49. Almost all of the formulas for calculating IOL power...
dacryocystitis
are based on the same general equation
that the sound beam is directed to the optic disc and the measurement is incorrect
severe dry eye

50. A patient with which of the following potential diagnoses would be tested with bengal?
that the sound beam is directed to the optic disc and the measurement is incorrect
rods
severe dry eye
red-green

Can you answer 50 questions in 15 minutes?

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Certified Ophthalmic Assistant

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