Test your basic knowledge |

Certified Ophthalmic Assistant

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 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. A patient with which of the following potential diagnoses would be tested with bengal?






3. Pachymetry readings are routinely taken prior to...






4. Estimating the anterior chamber depth with a penlight works because...






5. _______ are not used in evaluating tear break-up time (TBUT)






6. A color plate that shows no obvious number to normal and abnormal alike is useful because...






7. One of the keys in accurate pachymetry is...






8. The difference between Schirmer's test I and II is...






9. When performing a brightness acuity glare test - it is best to do which of the following?






10. 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)...






11. Measuring corneal thickness via nonoptical pachymetry involves the use of...






12. Hereditary color vision defects usually affect...






13. Each of the following can cause an error in the axial length scan reading of the IOL Master except...






14. Illumination for the color plates test...






15. An A-Sean can he artificially shortened due to...






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?






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

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18. Rose bengal is...






19. The axial length of an average adult eye is...






20. The type of pachymetry used to evaluate a glaucoma suspect is...






21. When using a penlight to estimate anterior chamber depth - an open angle would appear...






22. With the 1OLMaster - the ideal signal-to-noise ratio is...






23. Hereditary color vision defects affect...






24. When should a child have his or her color vision checked?






25. Schirmer's test does not require _____ except Test strips






26. In which of the following would glare testing be most appropriate?






27. A TBUT of which of the following would indicate tear film dysfunction?






28. For safety reasons - the limit for the number of readings that may he taken per eye per day with the 101.Master is...






29. Color vision testing is used to detect all of the following except...






30. In evaluating an axial length scan - the retinal echo must be...






31. If a biometry instrument fails to calibrate properly - one should...






32. When using a penlight to estimate the depth of the anterior chamber - the following technique is best...






33. The photosensitive pigments of the eye are sensitive to...






34. A rose bengal does not require the use of...






35. Laser interferometry uses which type of laser light?






36. When positioning the IOLMaster for the axial length reading...






37. Hereditary color defects most often fall into which category?






38. It is important to estimate the anterior chamber depth prior to dilation because...






39. This is not evaluated using rose Bengal except...






40. Glare testing is used to identify...






41. Before proceeding with the actual color plate test...






42. The IOLMaster evaluates each of the following except...






43. The IOLMaster eliminates which of the following sources of error?






44. The average central thickness of the human cornea is...






45. Schirmer's test II is used to measure...






46. When evaluating anterior chamber depth with the slit lump - the illumination technique used is...






47. Which eye structure is responsible for color vision?






48. When calculating IOL power - each of the following are necessary except...






49. If the patient is suspected of having an acquired color vision defect - all of the following apply except...






50. The Ishihara color plates are useful...