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






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






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






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






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






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






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






8. Glare testing is used to identify...






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






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






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






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






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






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






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






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






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






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






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






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






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






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






23. Which eye structure is responsible for color vision?






24. Measuring time for the Schirmer's test is...






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






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






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






28. Laser interferometry uses which type of laser light?






29. Illumination for the color plates test...






30. 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?






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






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






33. Hereditary color vision defects affect...






34. Rose bengal is...






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






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






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






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






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






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






41. 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)...






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






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






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






45. Which of the following should be color-vision tested one eye at a time?






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






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

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48. The Ishihara color plates are useful...






49. Acquired color vision defects...






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