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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. Acquired color vision defects...
can often be cured if the causative factor is eliminated
pressing on the globe too hard with the probe
narrow beam
545 pm

2. With the 1OLMaster - the ideal signal-to-noise ratio is...
for screening purposes - such as job applications
2.0 or more
corneal endothelial drop-out
having them trace the number/figure

3. Before proceeding with the actual color plate test...
the patient is shown a sample that is discernable to normal and abnormal alike
3.0 D
rods
tear filter papers

4. Color vision testing is used to detect all of the following except...
tear filter papers
the use of an anesthetic
blink
differentiate between congenital or acquired color blindness

5. The photosensitive pigments of the eye are sensitive to...
red - green - and blue
IOL power
the patient should be tested with near correction - if worn
ultrasound

6. The type of pachymetry used to evaluate a glaucoma suspect is...
desired postoperative refraction
varies according to the type of test
are based on the same general equation
central corneal thickness

7. Which eye structure is responsible for color vision?
rods
suspected acquired color defect
5 minutes
shine the light flatly from the side - in the plane of the iris

8. A measurement error of 1 mm in an axial eye length could result in an unwanted postoperative refractive error of as much as...
3.0 D
remove the instrument from use
refractive surgery
pressing on the globe too hard with the probe

9. The Ishihara color plates are useful...
for screening purposes - such as job applications
before starting school
are based on the same general equation
white to white corneal diameter

10. Hereditary color defects most often fall into which category?
white to white corneal diameter
5 minutes
2 to 3 seconds
red-green

11. Each of the following can cause an error in the axial length scan reading of the IOL Master except...
patient wearing spectacles
to have little or no shadow
infrared
posterior subcapsular cataract

12. When calculating IOL power - each of the following are necessary except...
white to white corneal diameter
focus can he moved off-axis to obtain a clear reading
to have little or no shadow
red-green

13. A rose bengal does not require the use of...
tear filter papers
remove the instrument from use
the cobalt blue filter
5 minutes

14. The Schirmer's test might be indicated in all of the following except...
dacryocystitis
for screening purposes - such as job applications
0.3 mm
patient wearing spectacles

15. You are inputting data for IOL calculations and notice that the K readings 44.5/42.75. This type of reading...
red - green - and blue
2.0 or more
is acceptable
a tall - central spike with only one peak and smaller spikes on either site

16. Glare testing is used to identify...
the patient should be tested with near correction - if worn
varies according to the type of test administered
varies according to the type of test
decrease in vision due to glare conditions

17. Schirmer's test II is used to measure...
to have little or no shadow
normal tearing
the defect tends to remain stable over time
2 to 3 seconds

18. This is not evaluated using rose Bengal except...
a staining agent
corneal endothelial drop-out
patient wearing spectacles
red - green - and blue

19. Illumination for the color plates test...
varies according to the type of test administered
red - green - and blue
reflex tears
with the central cornea

20. When positioning the IOLMaster for the axial length reading...
focus can he moved off-axis to obtain a clear reading
2.0 or more
545 pm
narrow beam

21. When should a child have his or her color vision checked?
before starting school
the patient should be tested with near correction - if worn
varies according to the type of test
focus can he moved off-axis to obtain a clear reading

22. It is important to estimate the anterior chamber depth prior to dilation because...
narrow angles may precipitate an angle-closure glaucoma attack
that the sound beam is directed to the optic disc and the measurement is incorrect
red-green
differentiate between congenital or acquired color blindness

23. The IOLMaster evaluates each of the following except...
to the left of the scleral and orbital echoes
refractive error
2.0 or more
pressing on the globe too hard with the probe

24. Hereditary color vision defects affect...
corneal endothelial drop-out
narrow angles may precipitate an angle-closure glaucoma attack
more males than females
the patient should be tested with near correction - if worn

25. The IOLMaster must be calibrated daily using a...
Allow the patient to adjust to the light level before reading the letters.
to have little or no shadow
'test eye'
narrow beam

26. One of the keys in accurate pachymetry is...
holding the probe perpendicular to the corneal surface
tear filter papers
shine the light flatly from the side - in the plane of the iris
focus can he moved off-axis to obtain a clear reading

27. 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...
a tall - central spike with only one peak and smaller spikes on either site
that the sound beam is directed to the optic disc and the measurement is incorrect
the patient is shown a sample that is discernable to normal and abnormal alike
with the central cornea

28. In test a patient with the color pseudoisochromatic plates...
the patient should be tested with near correction - if worn
5 minutes
2.0 or more
blink

29. When performing the TBUT test - the observer is looking for...
holding the probe perpendicular to the corneal surface
the appearance of dry spots
desired postoperative refraction
dacryocystitis

30. How long should the patient be given to recognize the figure in a color plate?
one-fourth
narrow beam
2 to 3 seconds
to have little or no shadow

31. A TBUT of which of the following would indicate tear film dysfunction?
pressing on the globe too hard with the probe
10 seconds
'test eye'
545 pm

32. In which of the following would glare testing be most appropriate?
posterior subcapsular cataract
the patient should be tested with near correction - if worn
patient wearing spectacles
normal tearing

33. 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)...
'test eye'
A-constant
one-fourth
pressing on the globe too hard with the probe

34. Schirmer's test I is used to measure...
5 minutes
differentiate between congenital or acquired color blindness
reflex tears
blink

35. A normally functioning lacrimal gland will produce by much wetting on a Schirmer's test strip after 5 minutes?
'test eye'
ultrasound
A Schirmer's test of 10 mm or more is considered normal.
holding the probe perpendicular to the corneal surface

36. Schirmer's test does not require _____ except Test strips
expensive equipment
before starting school
the defect tends to remain stable over time
reading disabilities

37. An A-Sean can he artificially shortened due to...
remove the instrument from use
red - green - and blue
for screening purposes - such as job applications
pressing on the globe too hard with the probe

38. When performing a brightness acuity glare test - it is best to do which of the following?
refractive surgery
normal tearing
can often be cured if the causative factor is eliminated
Allow the patient to adjust to the light level before reading the letters.

39. Pachymetry readings are routinely taken prior to...
shortened axial length due to compression
refractive surgery
'test eye'
one-fourth

40. 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?
narrow beam
one-fourth
a narrow angle and bowed iris cast a shadow on the iris
pressing on the globe too hard with the probe

41. When performing pachymetry prior to refractive surgery - it is generally best to begin...
a staining agent
before starting school
to the left of the scleral and orbital echoes
with the central cornea

42. Color vision defects in children are frequently detected among those with...
are based on the same general equation
5 minutes
reading disabilities
23 to 24 mm

43. 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?
narrow angles may precipitate an angle-closure glaucoma attack
545 pm
the patient is shown a sample that is discernable to normal and abnormal alike
0.3 mm

44. Young children can be tested using the color plates by...
pressing on the globe too hard with the probe
having them trace the number/figure
0.3 mm
a tall - central spike with only one peak and smaller spikes on either site

45. For safety reasons - the limit for the number of readings that may he taken per eye per day with the 101.Master is...
patient wearing spectacles
20
shortened axial length due to compression
that the sound beam is directed to the optic disc and the measurement is incorrect

46. If a biometry instrument fails to calibrate properly - one should...
varies according to the type of test
remove the instrument from use
a malingerer may invent a number - thus identifying him- or herself
ultrasound

47. Laser interferometry uses which type of laser light?
expensive equipment
infrared
shine the light flatly from the side - in the plane of the iris
reflex tears

48. Measuring time for the Schirmer's test is...
5 minutes
red-green
normal tearing
narrow beam

49. The IOLMaster eliminates which of the following sources of error?
to the left of the scleral and orbital echoes
shortened axial length due to compression
before starting school
holding the probe perpendicular to the corneal surface

50. When evaluating anterior chamber depth with the slit lump - the illumination technique used is...
infrared
narrow beam
ultrasound
shine the light flatly from the side - in the plane of the iris

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Certified Ophthalmic Assistant

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