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






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






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






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






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






6. Hereditary color vision defects usually affect...






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






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






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






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






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






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






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






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






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






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






17. When evaluating anterior chamber depth with the slit lump - the illumination technique used 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. Laser interferometry uses which type of laser light?






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






37. Almost all of the formulas for calculating IOL power...






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






39. Which eye structure is responsible for color vision?






40. 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)...






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






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






43. Acquired color vision defects...






44. Rose bengal is...






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






46. 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?






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






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






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






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