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. Acquired color vision defects...






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






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






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






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






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






7. Which eye structure is responsible for color vision?






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






9. The Ishihara color plates are useful...






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






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






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






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






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






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






16. Glare testing is used to identify...






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






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






19. Illumination for the color plates test...






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






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






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






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






24. Hereditary color vision defects affect...






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






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






27. 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...






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






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






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






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






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






33. 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)...






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






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






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






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






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






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






40. 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?






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






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






43. 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?






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






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






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






47. Laser interferometry uses which type of laser light?






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






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






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