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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. When using color plates - a score indicates abnormal color vision...






2. Acquired color vision defects...






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






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






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






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






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)...






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






9. Which of the following poses problems in obtaining accurate measurements for IOL calculations?






10. Almost all of the formulas for calculating IOL power...






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






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






13. 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...






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

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15. You are inputting data for IOL calculations and notice that the K readings 44.5/42.75. This type of reading...






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






17. Young children can be tested using the color plates by...






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






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






20. The Schirmer's test might be indicated in all of the following except...






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






22. 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?






23. In test a patient with the color pseudoisochromatic plates...






24. Just prior to the beginning of the TBUT test - the patient is instructed to...






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






26. When calculating intraocular lens (IOL) powers - one must enter...






27. A measurement error of 1 mm in an axial eye length could result in an unwanted postoperative refractive error of as much as...






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






29. The ideal IOLMaster axial length graph is...






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






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






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






33. How long should the patient be given to recognize the figure in a color plate?






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






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






36. 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?






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






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






39. Schirmer's test I is used to measure...






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

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41. Illumination for the color plates test...






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






43. When performing pachymetry prior to refractive surgery - it is generally best to begin...






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






45. Glare testing is used to identify...






46. When performing the TBUT test - the observer is looking for...






47. Hereditary color vision defects affect...






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






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






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







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