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. Glare testing is used to identify...






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






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






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






5. 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)...






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






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






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






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






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






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






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






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






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






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






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






17. 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...






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






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






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






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






22. Hereditary color vision defects usually affect...






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






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






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






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






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






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






29. Illumination for the color plates test...






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






31. 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?






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






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






34. The Ishihara color plates are useful...






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






36. Which eye structure is responsible for color vision?






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






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






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






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






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






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






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






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






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






46. Laser interferometry uses which type of laser light?






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






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






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






50. Acquired color vision defects...