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. Hereditary color vision defects usually affect...






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






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






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






5. 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?






6. Hereditary color vision defects affect...






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






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






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






10. Glare testing is used to identify...






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






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






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






14. The Ishihara color plates are useful...






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






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






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






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






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






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






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






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






23. Acquired color vision defects...






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






39. Rose bengal is...






40. Which eye structure is responsible for color vision?






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






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






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






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






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






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






47. Illumination for the color plates test...






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






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






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