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






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






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






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






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






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






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






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






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






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






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






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






13. Laser interferometry uses which type of laser light?






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






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






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






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






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






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






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






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






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






23. Hereditary color vision defects affect...






24. 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?






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






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






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






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






30. Hereditary color vision defects usually affect...






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






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






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






34. 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?






35. The Ishihara color plates are useful...






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






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






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






39. Which eye structure is responsible for color vision?






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






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






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






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






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






45. Acquired color vision defects...






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






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






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






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






50. Illumination for the color plates test...