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Certified Ophthalmic Assistant

Subjects : certifications, health-sciences

Instructions:

Answer 50 questions in 15 minutes.
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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. If the patient is suspected of having an acquired color vision defect - all of the following apply except...
545 pm
decrease in vision due to glare conditions
refractive error
the defect tends to remain stable over time

2. Measuring time for the Schirmer's test is...
5 minutes
reflex tears
the use of an anesthetic
normal tearing

3. Young children can be tested using the color plates by...
suspected acquired color defect
the defect tends to remain stable over time
having them trace the number/figure
red - green - and blue

4. It is important to estimate the anterior chamber depth prior to dilation because...
remove the instrument from use
0.3 mm
narrow angles may precipitate an angle-closure glaucoma attack
a staining agent

5. When performing the TBUT test - the observer is looking for...
0.3 mm
the appearance of dry spots
with the central cornea
the patient is shown a sample that is discernable to normal and abnormal alike

6. With the 1OLMaster - the ideal signal-to-noise ratio is...
can often be cured if the causative factor is eliminated
infrared
2.0 or more
blink

7. A rose bengal does not require the use of...
the cobalt blue filter
that the sound beam is directed to the optic disc and the measurement is incorrect
red-green
posterior subcapsular cataract

8. For safety reasons - the limit for the number of readings that may he taken per eye per day with the 101.Master is...
20
'test eye'
the defect tends to remain stable over time
more males than females

9. The axial length of the eye is important in the calculation of...
patients who have had corneal refractive surgery
A Schirmer's test of 10 mm or more is considered normal.
IOL power
the cobalt blue filter

10. Measuring corneal thickness via nonoptical pachymetry involves the use of...
expensive equipment
varies according to the type of test
ultrasound
refractive surgery

11. Hereditary color defects most often fall into which category?
red-green
desired postoperative refraction
varies according to the type of test
corneal endothelial drop-out

12. The difference between Schirmer's test I and II is...
A Schirmer's test of 10 mm or more is considered normal.
the use of an anesthetic
patient wearing spectacles
reflex tears

13. The IOLMaster eliminates which of the following sources of error?
shortened axial length due to compression
the patient should be tested with near correction - if worn
severe dry eye
2 to 3 seconds

14. When using a penlight to estimate anterior chamber depth - an open angle would appear...
that the sound beam is directed to the optic disc and the measurement is incorrect
the use of an anesthetic
2 to 3 seconds
to have little or no shadow

15. The Schirmer's test might be indicated in all of the following except...
blink
dacryocystitis
one-fourth
to have little or no shadow

16. A patient with which of the following potential diagnoses would be tested with bengal?
refractive error
23 to 24 mm
545 pm
severe dry eye

17. Which of the following poses problems in obtaining accurate measurements for IOL calculations?
patients who have had corneal refractive surgery
IOL power
2.0 or more
pressing on the globe too hard with the probe

18. Almost all of the formulas for calculating IOL power...
are based on the same general equation
that the sound beam is directed to the optic disc and the measurement is incorrect
remove the instrument from use
before starting school

19. In test a patient with the color pseudoisochromatic plates...
the patient should be tested with near correction - if worn
blink
holding the probe perpendicular to the corneal surface
the cobalt blue filter

20. In an axial length A-scan - if there is only one tall echo from the back of the eye with no other echoes behind it - this indicates...
2.0 or more
refractive surgery
that the sound beam is directed to the optic disc and the measurement is incorrect
central corneal thickness

21. Schirmer's test I is used to measure...
narrow beam
reflex tears
the cobalt blue filter
dacryocystitis

22. An A-Sean can he artificially shortened due to...
pressing on the globe too hard with the probe
reading disabilities
red-green
with the central cornea

23. Estimating the anterior chamber depth with a penlight works because...
3.0 D
A-constant
for screening purposes - such as job applications
a narrow angle and bowed iris cast a shadow on the iris

24. 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?
patients who have had corneal refractive surgery
red - green - and blue
0.3 mm
shortened axial length due to compression

25. 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
before starting school
patients who have had corneal refractive surgery
to the left of the scleral and orbital echoes

26. When evaluating anterior chamber depth with the slit lump - the illumination technique used is...
A Schirmer's test of 10 mm or more is considered normal.
2 to 3 seconds
normal tearing
narrow beam

27. Schirmer's test does not require _____ except Test strips
5 minutes
expensive equipment
one-fourth
IOL power

28. When calculating intraocular lens (IOL) powers - one must enter...
red-green
desired postoperative refraction
2 to 3 seconds
shine the light flatly from the side - in the plane of the iris

29. Illumination for the color plates test...
rods
varies according to the type of test administered
10 seconds
A Schirmer's test of 10 mm or more is considered normal.

30. Rose bengal is...
blink
refractive error
a staining agent
varies according to the type of test administered

31. Hereditary color vision defects affect...
'test eye'
the patient is shown a sample that is discernable to normal and abnormal alike
more males than females
dacryocystitis

32. Color vision testing is used to detect all of the following except...
differentiate between congenital or acquired color blindness
are based on the same general equation
ultrasound
20

33. The IOLMaster evaluates each of the following except...
red - green - and blue
refractive error
dacryocystitis
suspected acquired color defect

34. Glare testing is used to identify...
decrease in vision due to glare conditions
patients who have had corneal refractive surgery
'test eye'
to the left of the scleral and orbital echoes

35. When performing a brightness acuity glare test - it is best to do which of the following?
narrow beam
for screening purposes - such as job applications
white to white corneal diameter
Allow the patient to adjust to the light level before reading the letters.

36. Pachymetry readings are routinely taken prior to...
ultrasound
for screening purposes - such as job applications
severe dry eye
refractive surgery

37. A measurement error of 1 mm in an axial eye length could result in an unwanted postoperative refractive error of as much as...
white to white corneal diameter
3.0 D
having them trace the number/figure
a tall - central spike with only one peak and smaller spikes on either site

38. The photosensitive pigments of the eye are sensitive to...
patients who have had corneal refractive surgery
a staining agent
red - green - and blue
patient wearing spectacles

39. Which of the following should be color-vision tested one eye at a time?
3.0 D
23 to 24 mm
suspected acquired color defect
varies according to the type of test

40. Each of the following can cause an error in the axial length scan reading of the IOL Master except...
'test eye'
patient wearing spectacles
rods
2.0 or more

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

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42. When using color plates - a score indicates abnormal color vision...
varies according to the type of test
red - green - and blue
the patient should be tested with near correction - if worn
pressing on the globe too hard with the probe

43. 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?
one-fourth
severe dry eye
desired postoperative refraction
shine the light flatly from the side - in the plane of the iris

44. Hereditary color vision defects usually affect...
refractive surgery
varies according to the type of test administered
both eyes equally
2.0 or more

45. Just prior to the beginning of the TBUT test - the patient is instructed to...
blink
narrow beam
rods
refractive error

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

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47. Laser interferometry uses which type of laser light?
infrared
20
with the central cornea
central corneal thickness

48. How long should the patient be given to recognize the figure in a color plate?
refractive surgery
having them trace the number/figure
2 to 3 seconds
remove the instrument from use

49. Acquired color vision defects...
can often be cured if the causative factor is eliminated
normal tearing
are based on the same general equation
reading disabilities

50. A color plate that shows no obvious number to normal and abnormal alike is useful because...
A Schirmer's test of 10 mm or more is considered normal.
patients who have had corneal refractive surgery
a malingerer may invent a number - thus identifying him- or herself
suspected acquired color defect

Can you answer 50 questions in 15 minutes?

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Certified Ophthalmic Assistant

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