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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. In test a patient with the color pseudoisochromatic plates...
Allow the patient to adjust to the light level before reading the letters.
the patient should be tested with near correction - if worn
differentiate between congenital or acquired color blindness
to the left of the scleral and orbital echoes

2. The IOLMaster evaluates each of the following except...
refractive error
23 to 24 mm
suspected acquired color defect
Allow the patient to adjust to the light level before reading the letters.

3. The axial length of the eye is important in the calculation of...
having them trace the number/figure
IOL power
rods
with the central cornea

4. Schirmer's test does not require _____ except Test strips
expensive equipment
having them trace the number/figure
5 minutes
white to white corneal diameter

5. A rose bengal does not require the use of...
normal tearing
10 seconds
infrared
the cobalt blue filter

6. For safety reasons - the limit for the number of readings that may he taken per eye per day with the 101.Master is...
20
pressing on the globe too hard with the probe
IOL power
varies according to the type of test administered

7. The Ishihara color plates are useful...
the cobalt blue filter
2 to 3 seconds
refractive error
for screening purposes - such as job applications

8. Measuring corneal thickness via nonoptical pachymetry involves the use of...
ultrasound
is acceptable
patients who have had corneal refractive surgery
reading disabilities

9. Hereditary color vision defects usually affect...
to have little or no shadow
a tall - central spike with only one peak and smaller spikes on either site
23 to 24 mm
both eyes equally

10. Schirmer's test II is used to measure...
suspected acquired color defect
red-green
expensive equipment
normal tearing

11. When using color plates - a score indicates abnormal color vision...
refractive surgery
varies according to the type of test
shortened axial length due to compression
posterior subcapsular cataract

12. Young children can be tested using the color plates by...
narrow beam
having them trace the number/figure
the cobalt blue filter
a malingerer may invent a number - thus identifying him- or herself

13. In which of the following would glare testing be most appropriate?
that the sound beam is directed to the optic disc and the measurement is incorrect
refractive surgery
posterior subcapsular cataract
the patient should be tested with near correction - if worn

14. Estimating the anterior chamber depth with a penlight works because...
refractive surgery
a narrow angle and bowed iris cast a shadow on the iris
for screening purposes - such as job applications
reflex tears

15. 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?
reflex tears
0.3 mm
tear filter papers
refractive error

16. 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?
dacryocystitis
to have little or no shadow
varies according to the type of test administered
one-fourth

17. When using a penlight to estimate anterior chamber depth - an open angle would appear...
before starting school
suspected acquired color defect
to have little or no shadow
a tall - central spike with only one peak and smaller spikes on either site

18. Acquired color vision defects...
decrease in vision due to glare conditions
20
suspected acquired color defect
can often be cured if the causative factor is eliminated

19. Which of the following should be color-vision tested one eye at a time?
suspected acquired color defect
posterior subcapsular cataract
with the central cornea
more males than females

20. One of the keys in accurate pachymetry is...
with the central cornea
0.3 mm
holding the probe perpendicular to the corneal surface
for screening purposes - such as job applications

21. Hereditary color defects most often fall into which category?
IOL power
to the left of the scleral and orbital echoes
red-green
shine the light flatly from the side - in the plane of the iris

22. The manufacturer of a given IOL often supplies a specific number that must be entered into the IOL calculations when the lens is to be used. This number is refer to as a(n)...
A-constant
severe dry eye
varies according to the type of test administered
A Schirmer's test of 10 mm or more is considered normal.

23. Schirmer's test I is used to measure...
a tall - central spike with only one peak and smaller spikes on either site
ultrasound
reflex tears
both eyes equally

24. When evaluating anterior chamber depth with the slit lump - the illumination technique used is...
one-fourth
narrow beam
decrease in vision due to glare conditions
red-green

25. Rose bengal is...
23 to 24 mm
the patient is shown a sample that is discernable to normal and abnormal alike
refractive error
a staining agent

26. It is important to estimate the anterior chamber depth prior to dilation because...
patients who have had corneal refractive surgery
0.3 mm
narrow angles may precipitate an angle-closure glaucoma attack
posterior subcapsular cataract

27. Glare testing is used to identify...
IOL power
reflex tears
narrow beam
decrease in vision due to glare conditions

28. Hereditary color vision defects affect...
more males than females
are based on the same general equation
holding the probe perpendicular to the corneal surface
the use of an anesthetic

29. The Schirmer's test might be indicated in all of the following except...
can often be cured if the causative factor is eliminated
545 pm
the cobalt blue filter
dacryocystitis

30. _______ are not used in evaluating tear break-up time (TBUT)
desired postoperative refraction
tear filter papers
central corneal thickness
are based on the same general equation

31. If a biometry instrument fails to calibrate properly - one should...
remove the instrument from use
central corneal thickness
reflex tears
with the central cornea

32. This is not evaluated using rose Bengal except...
10 seconds
23 to 24 mm
corneal endothelial drop-out
5 minutes

33. Illumination for the color plates test...
varies according to the type of test administered
normal tearing
the patient is shown a sample that is discernable to normal and abnormal alike
shortened axial length due to compression

34. In evaluating an axial length scan - the retinal echo must be...
a tall - central spike with only one peak and smaller spikes on either site
Allow the patient to adjust to the light level before reading the letters.
to the left of the scleral and orbital echoes
the cobalt blue filter

35. A patient with which of the following potential diagnoses would be tested with bengal?
severe dry eye
for screening purposes - such as job applications
the use of an anesthetic
holding the probe perpendicular to the corneal surface

36. A measurement error of 1 mm in an axial eye length could result in an unwanted postoperative refractive error of as much as...
is acceptable
for screening purposes - such as job applications
20
3.0 D

37. When should a child have his or her color vision checked?
reading disabilities
ultrasound
before starting school
2.0 or more

38. You are inputting data for IOL calculations and notice that the K readings 44.5/42.75. This type of reading...
one-fourth
refractive error
is acceptable
severe dry eye

39. The IOLMaster eliminates which of the following sources of error?
shortened axial length due to compression
'test eye'
corneal endothelial drop-out
with the central cornea

40. How long should the patient be given to recognize the figure in a color plate?
dacryocystitis
2 to 3 seconds
central corneal thickness
shine the light flatly from the side - in the plane of the iris

41. Pachymetry readings are routinely taken prior to...
the cobalt blue filter
differentiate between congenital or acquired color blindness
545 pm
refractive surgery

42. A color plate that shows no obvious number to normal and abnormal alike is useful because...
dacryocystitis
one-fourth
a malingerer may invent a number - thus identifying him- or herself
23 to 24 mm

43. Which of the following poses problems in obtaining accurate measurements for IOL calculations?
red - green - and blue
more males than females
ultrasound
patients who have had corneal refractive surgery

44. Each of the following can cause an error in the axial length scan reading of the IOL Master except...
patient wearing spectacles
varies according to the type of test
expensive equipment
23 to 24 mm

45. With the 1OLMaster - the ideal signal-to-noise ratio is...
ultrasound
2.0 or more
narrow beam
the cobalt blue filter

46. Laser interferometry uses which type of laser light?
infrared
'test eye'
20
desired postoperative refraction

47. When performing the TBUT test - the observer is looking for...
decrease in vision due to glare conditions
the appearance of dry spots
that the sound beam is directed to the optic disc and the measurement is incorrect
before starting school

48. Which eye structure is responsible for color vision?
rods
suspected acquired color defect
that the sound beam is directed to the optic disc and the measurement is incorrect
before starting school

49. The IOLMaster must be calibrated daily using a...
shine the light flatly from the side - in the plane of the iris
ultrasound
'test eye'
0.3 mm

50. When calculating intraocular lens (IOL) powers - one must enter...
reflex tears
for screening purposes - such as job applications
desired postoperative refraction
2 to 3 seconds

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Certified Ophthalmic Assistant

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