Test your basic knowledge |

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. Laser interferometry uses which type of laser light?
infrared
refractive surgery
tear filter papers
the patient should be tested with near correction - if worn

2. In which of the following would glare testing be most appropriate?
reflex tears
posterior subcapsular cataract
5 minutes
that the sound beam is directed to the optic disc and the measurement is incorrect

3. Hereditary color defects most often fall into which category?
reflex tears
2.0 or more
varies according to the type of test
red-green

4. The Schirmer's test might be indicated in all of the following except...
more males than females
dacryocystitis
with the central cornea
ultrasound

5. A patient with which of the following potential diagnoses would be tested with bengal?
before starting school
dacryocystitis
that the sound beam is directed to the optic disc and the measurement is incorrect
severe dry eye

6. When performing a brightness acuity glare test - it is best to do which of the following?
pressing on the globe too hard with the probe
Allow the patient to adjust to the light level before reading the letters.
refractive surgery
reading disabilities

7. 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
corneal endothelial drop-out
10 seconds

8. Which of the following poses problems in obtaining accurate measurements for IOL calculations?
patients who have had corneal refractive surgery
the appearance of dry spots
red-green
before starting school

9. The IOLMaster must be calibrated daily using a...
'test eye'
before starting school
IOL power
0.3 mm

10. Young children can be tested using the color plates by...
red - green - and blue
having them trace the number/figure
expensive equipment
varies according to the type of test administered

11. The IOLMaster eliminates which of the following sources of error?
patients who have had corneal refractive surgery
shortened axial length due to compression
refractive error
2.0 or more

12. In test a patient with the color pseudoisochromatic plates...
23 to 24 mm
a narrow angle and bowed iris cast a shadow on the iris
is acceptable
the patient should be tested with near correction - if worn

13. When using a penlight to estimate anterior chamber depth - an open angle would appear...
corneal endothelial drop-out
to have little or no shadow
expensive equipment
patient wearing spectacles

14. When calculating IOL power - each of the following are necessary except...
2 to 3 seconds
varies according to the type of test administered
the cobalt blue filter
white to white corneal diameter

15. Estimating the anterior chamber depth with a penlight works because...
tear filter papers
red-green
a narrow angle and bowed iris cast a shadow on the iris
reflex tears

16. Color vision testing is used to detect all of the following except...
10 seconds
the defect tends to remain stable over time
expensive equipment
differentiate between congenital or acquired color blindness

17. When should a child have his or her color vision checked?
red - green - and blue
before starting school
the use of an anesthetic
posterior subcapsular cataract

18. The photosensitive pigments of the eye are sensitive to...
20
red - green - and blue
a narrow angle and bowed iris cast a shadow on the iris
decrease in vision due to glare conditions

19. When performing the TBUT test - the observer is looking for...
0.3 mm
the appearance of dry spots
545 pm
the cobalt blue filter

20. How long should the patient be given to recognize the figure in a color plate?
suspected acquired color defect
2 to 3 seconds
the cobalt blue filter
A Schirmer's test of 10 mm or more is considered normal.

21. Acquired color vision defects...
can often be cured if the causative factor is eliminated
central corneal thickness
one-fourth
varies according to the type of test

22. Hereditary color vision defects usually affect...
the cobalt blue filter
both eyes equally
one-fourth
reflex tears

23. Pachymetry readings are routinely taken prior to...
a narrow angle and bowed iris cast a shadow on the iris
narrow beam
both eyes equally
refractive surgery

24. The ideal IOLMaster axial length graph is...
a tall - central spike with only one peak and smaller spikes on either site
the appearance of dry spots
one-fourth
red - green - and blue

25. Which eye structure is responsible for color vision?
holding the probe perpendicular to the corneal surface
corneal endothelial drop-out
rods
a tall - central spike with only one peak and smaller spikes on either site

26. 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?
20
a staining agent
one-fourth
patient wearing spectacles

27. The Ishihara color plates are useful...
narrow beam
central corneal thickness
a malingerer may invent a number - thus identifying him- or herself
for screening purposes - such as job applications

28. It is important to estimate the anterior chamber depth prior to dilation because...
remove the instrument from use
narrow angles may precipitate an angle-closure glaucoma attack
are based on the same general equation
a narrow angle and bowed iris cast a shadow on the iris

29. In evaluating an axial length scan - the retinal echo must be...
reading disabilities
to the left of the scleral and orbital echoes
reflex tears
normal tearing

30. When calculating intraocular lens (IOL) powers - one must enter...
the patient should be tested with near correction - if worn
a narrow angle and bowed iris cast a shadow on the iris
desired postoperative refraction
before starting school

31. The type of pachymetry used to evaluate a glaucoma suspect is...
central corneal thickness
red-green
20
10 seconds

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

33. When performing pachymetry prior to refractive surgery - it is generally best to begin...
with the central cornea
blink
'test eye'
refractive surgery

34. Schirmer's test II is used to measure...
with the central cornea
the use of an anesthetic
differentiate between congenital or acquired color blindness
normal tearing

35. Schirmer's test does not require _____ except Test strips
patients who have had corneal refractive surgery
A-constant
refractive error
expensive equipment

36. Hereditary color vision defects affect...
ultrasound
severe dry eye
more males than females
patients who have had corneal refractive surgery

37. If a biometry instrument fails to calibrate properly - one should...
A Schirmer's test of 10 mm or more is considered normal.
dacryocystitis
with the central cornea
remove the instrument from use

38. The IOLMaster evaluates each of the following except...
central corneal thickness
more males than females
patient wearing spectacles
refractive error

39. Measuring corneal thickness via nonoptical pachymetry involves the use of...
blink
ultrasound
23 to 24 mm
10 seconds

40. When evaluating anterior chamber depth with the slit lump - the illumination technique used is...
one-fourth
A-constant
refractive surgery
narrow beam

41. When using a penlight to estimate the depth of the anterior chamber - the following technique is best...
20
shine the light flatly from the side - in the plane of the iris
differentiate between congenital or acquired color blindness
varies according to the type of test administered

42. When positioning the IOLMaster for the axial length reading...
differentiate between congenital or acquired color blindness
varies according to the type of test
focus can he moved off-axis to obtain a clear reading
decrease in vision due to glare conditions

43. You are inputting data for IOL calculations and notice that the K readings 44.5/42.75. This type of reading...
10 seconds
remove the instrument from use
is acceptable
posterior subcapsular cataract

44. _______ are not used in evaluating tear break-up time (TBUT)
0.3 mm
tear filter papers
for screening purposes - such as job applications
central corneal thickness

45. 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?
10 seconds
0.3 mm
pressing on the globe too hard with the probe
red - green - and blue

46. Illumination for the color plates test...
are based on the same general equation
varies according to the type of test administered
to have little or no shadow
dacryocystitis

47. The average central thickness of the human cornea is...
0.3 mm
having them trace the number/figure
'test eye'
545 pm

48. For safety reasons - the limit for the number of readings that may he taken per eye per day with the 101.Master is...
20
10 seconds
to have little or no shadow
before starting school

49. A rose bengal does not require the use of...
the cobalt blue filter
A Schirmer's test of 10 mm or more is considered normal.
the patient should be tested with near correction - if worn
both eyes equally

50. A color plate that shows no obvious number to normal and abnormal alike is useful because...
red-green
a malingerer may invent a number - thus identifying him- or herself
ultrasound
desired postoperative refraction

Test your basic knowledge |

Certified Ophthalmic Assistant

Communication skills, Self help skills, Self improvement skills, Productivity skills, Writing skills, Business skills, Thinking skills & More...

502 Pages | Only $12 | PDF / EPub, Kindle Ready

Top Scores

Link to This Test

Related Subjects