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






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






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






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






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






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






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






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






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






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. The Ishihara color plates are useful...






12. Acquired color vision defects...






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

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






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






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






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






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






19. The axial length of the eye is important in the calculation of...






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






21. Which eye structure is responsible for color vision?






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






23. Rose bengal is...






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






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

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






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






28. 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...






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






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






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






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






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






34. 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?






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






36. Illumination for the color plates test...






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






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






39. Glare testing is used to identify...






40. Color vision defects in children are frequently detected among those with...






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






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






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






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






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






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






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






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






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






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






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