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 Ishihara color plates are useful...






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






3. Rose bengal is...






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






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






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






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






8. Which eye structure is responsible for color vision?






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






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






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






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






13. Illumination for the color plates test...






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






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






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






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






18. 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?






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






20. Acquired color vision defects...






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






22. 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...






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






24. Laser interferometry uses which type of laser light?






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






26. 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?






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






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


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






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






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






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






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






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






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






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






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






38. Hereditary color vision defects affect...






39. Glare testing is used to identify...






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






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






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






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






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






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






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






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






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


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






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