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. The photosensitive pigments of the eye are sensitive to...
A-constant
a tall - central spike with only one peak and smaller spikes on either site
red - green - and blue
to have little or no shadow

2. Which of the following should be color-vision tested one eye at a time?
for screening purposes - such as job applications
suspected acquired color defect
narrow beam
a malingerer may invent a number - thus identifying him- or herself

3. When evaluating anterior chamber depth with the slit lump - the illumination technique used is...
posterior subcapsular cataract
red-green
narrow beam
'test eye'

4. A color plate that shows no obvious number to normal and abnormal alike is useful because...
a malingerer may invent a number - thus identifying him- or herself
is acceptable
reflex tears
patient wearing spectacles

5. If the patient is suspected of having an acquired color vision defect - all of the following apply except...
the defect tends to remain stable over time
can often be cured if the causative factor is eliminated
to have little or no shadow
posterior subcapsular cataract

6. When using color plates - a score indicates abnormal color vision...
varies according to the type of test
2.0 or more
a tall - central spike with only one peak and smaller spikes on either site
to the left of the scleral and orbital echoes

7. When performing the TBUT test - the observer is looking for...
the appearance of dry spots
having them trace the number/figure
differentiate between congenital or acquired color blindness
desired postoperative refraction

8. 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
posterior subcapsular cataract
5 minutes
refractive surgery

9. The IOLMaster eliminates which of the following sources of error?
before starting school
10 seconds
shortened axial length due to compression
545 pm

10. Laser interferometry uses which type of laser light?
infrared
the patient is shown a sample that is discernable to normal and abnormal alike
corneal endothelial drop-out
IOL power

11. Glare testing is used to identify...
decrease in vision due to glare conditions
20
10 seconds
remove the instrument from use

12. It is important to estimate the anterior chamber depth prior to dilation because...
one-fourth
narrow angles may precipitate an angle-closure glaucoma attack
the appearance of dry spots
a tall - central spike with only one peak and smaller spikes on either site

13. Just prior to the beginning of the TBUT test - the patient is instructed to...
white to white corneal diameter
the appearance of dry spots
remove the instrument from use
blink

14. Schirmer's test I is used to measure...
patient wearing spectacles
reflex tears
for screening purposes - such as job applications
corneal endothelial drop-out

15. When positioning the IOLMaster for the axial length reading...
one-fourth
focus can he moved off-axis to obtain a clear reading
A-constant
shortened axial length due to compression

16. The Schirmer's test might be indicated in all of the following except...
dacryocystitis
IOL power
decrease in vision due to glare conditions
refractive surgery

17. In which of the following would glare testing be most appropriate?
severe dry eye
reading disabilities
posterior subcapsular cataract
a malingerer may invent a number - thus identifying him- or herself

18. Young children can be tested using the color plates by...
are based on the same general equation
the patient should be tested with near correction - if worn
having them trace the number/figure
Allow the patient to adjust to the light level before reading the letters.

19. For safety reasons - the limit for the number of readings that may he taken per eye per day with the 101.Master is...
20
Allow the patient to adjust to the light level before reading the letters.
before starting school
for screening purposes - such as job applications

20. In test a patient with the color pseudoisochromatic plates...
with the central cornea
the patient should be tested with near correction - if worn
reading disabilities
a staining agent

21. One of the keys in accurate pachymetry is...
with the central cornea
red - green - and blue
holding the probe perpendicular to the corneal surface
the cobalt blue filter

22. Pachymetry readings are routinely taken prior to...
focus can he moved off-axis to obtain a clear reading
refractive surgery
decrease in vision due to glare conditions
white to white corneal diameter

23. Almost all of the formulas for calculating IOL power...
can often be cured if the causative factor is eliminated
are based on the same general equation
varies according to the type of test administered
10 seconds

24. When should a child have his or her color vision checked?
severe dry eye
5 minutes
having them trace the number/figure
before starting school

25. If a biometry instrument fails to calibrate properly - one should...
shortened axial length due to compression
infrared
the defect tends to remain stable over time
remove the instrument from use

26. The axial length of the eye is important in the calculation of...
desired postoperative refraction
before starting school
IOL power
are based on the same general equation

27. The axial length of an average adult eye is...
patients who have had corneal refractive surgery
0.3 mm
23 to 24 mm
holding the probe perpendicular to the corneal surface

28. Which eye structure is responsible for color vision?
expensive equipment
patients who have had corneal refractive surgery
posterior subcapsular cataract
rods

29. 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...
reflex tears
that the sound beam is directed to the optic disc and the measurement is incorrect
corneal endothelial drop-out
with the central cornea

30. Measuring time for the Schirmer's test is...
the cobalt blue filter
shine the light flatly from the side - in the plane of the iris
remove the instrument from use
5 minutes

31. Estimating the anterior chamber depth with a penlight works because...
a narrow angle and bowed iris cast a shadow on the iris
shortened axial length due to compression
remove the instrument from use
red-green

32. Each of the following can cause an error in the axial length scan reading of the IOL Master except...
holding the probe perpendicular to the corneal surface
patient wearing spectacles
reflex tears
refractive surgery

33. Color vision defects in children are frequently detected among those with...
desired postoperative refraction
corneal endothelial drop-out
reading disabilities
the appearance of dry spots

34. An A-Sean can he artificially shortened due to...
holding the probe perpendicular to the corneal surface
pressing on the globe too hard with the probe
having them trace the number/figure
is acceptable

35. 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?
red - green - and blue
one-fourth
desired postoperative refraction
differentiate between congenital or acquired color blindness

36. When performing pachymetry prior to refractive surgery - it is generally best to begin...
with the central cornea
refractive error
white to white corneal diameter
expensive equipment

37. The IOLMaster evaluates each of the following except...
can often be cured if the causative factor is eliminated
desired postoperative refraction
expensive equipment
refractive error

38. Hereditary color defects most often fall into which category?
focus can he moved off-axis to obtain a clear reading
decrease in vision due to glare conditions
the patient should be tested with near correction - if worn
red-green

39. With the 1OLMaster - the ideal signal-to-noise ratio is...
tear filter papers
having them trace the number/figure
2.0 or more
Allow the patient to adjust to the light level before reading the letters.

40. The ideal IOLMaster axial length graph is...
5 minutes
545 pm
2 to 3 seconds
a tall - central spike with only one peak and smaller spikes on either site

41. When performing a brightness acuity glare test - it is best to do which of the following?
corneal endothelial drop-out
to have little or no shadow
Allow the patient to adjust to the light level before reading the letters.
23 to 24 mm

42. Acquired color vision defects...
are based on the same general equation
0.3 mm
narrow angles may precipitate an angle-closure glaucoma attack
can often be cured if the causative factor is eliminated

43. When using a penlight to estimate anterior chamber depth - an open angle would appear...
white to white corneal diameter
having them trace the number/figure
to have little or no shadow
more males than females

44. Which of the following poses problems in obtaining accurate measurements for IOL calculations?
Allow the patient to adjust to the light level before reading the letters.
decrease in vision due to glare conditions
patients who have had corneal refractive surgery
10 seconds

45. How long should the patient be given to recognize the figure in a color plate?
both eyes equally
2 to 3 seconds
holding the probe perpendicular to the corneal surface
Allow the patient to adjust to the light level before reading the letters.

46. Measuring corneal thickness via nonoptical pachymetry involves the use of...
shortened axial length due to compression
ultrasound
narrow angles may precipitate an angle-closure glaucoma attack
20

47. In evaluating an axial length scan - the retinal echo must be...
to have little or no shadow
dacryocystitis
to the left of the scleral and orbital echoes
differentiate between congenital or acquired color blindness

48. A patient with which of the following potential diagnoses would be tested with bengal?
severe dry eye
corneal endothelial drop-out
more males than females
before starting school

49. Hereditary color vision defects affect...
A-constant
desired postoperative refraction
more males than females
IOL power

50. Illumination for the color plates test...
varies according to the type of test administered
differentiate between congenital or acquired color blindness
the cobalt blue filter
2 to 3 seconds

Can you answer 50 questions in 15 minutes?

Major Subjects
Tests & Exams AP CLEP DSST GRE SAT GMAT	Certifications CISSP go to https://www.isc2.org/ PMP ITIL RHCE MCTS More...	IT Skills Android Programming Data Modeling Objective C Programming Basic Python Programming Adobe Illustrator More...	Business Skills Advertising Techniques Business Accounting Basics Business Strategy Human Resource Management Marketing Basics More...
Soft Skills Body Language People Skills Public Speaking Persuasion Job Hunting And Resumes More...	Vocabulary GRE Vocab SAT Vocab TOEFL Essential Vocab Basic English Words For All Global Words You Should Know Business English More...	Languages AP German Vocab AP Latin Vocab SAT Subject Test: French Italian Survival Norwegian Survival More...	Engineering Audio Engineering Computer Science Engineering Aerospace Engineering Chemical Engineering Structural Engineering More...
Health Sciences Basic Nursing Skills Health Science Language Fundamentals Veterinary Technology Medical Language Cardiology Clinical Surgery More...	English Grammar Fundamentals Literary And Rhetorical Vocab Elements Of Style Vocab Introduction To English Major Complete Advanced Sentences Literature Homonyms More...	Math Algebra Formulas Basic Arithmetic: Measurements Metric Conversions Geometric Properties Important Math Facts Number Sense Vocab Business Math More...	Other Major Subjects Science Economics History Law Performing-arts Cooking Logic & Reasoning Trivia

Test your basic knowledge |

Certified Ophthalmic Assistant

Can you answer 50 questions in 15 minutes?

Let me suggest you:

Browse all subjects

Browse all tests

Most popular tests

Major Subjects

Tests & Exams

Certifications

IT Skills

Business Skills

Soft Skills

Vocabulary

Languages

Engineering

Health Sciences

English

Math

Other Major Subjects

Browse all subjects

Browse all tests

Most popular tests