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






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






3. Hereditary color vision defects affect...






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






5. Glare testing is used to identify...






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






7. Illumination for the color plates test...






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






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






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






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






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






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






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






15. Laser interferometry uses which type of laser light?






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






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






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






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






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






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






22. Hereditary color vision defects usually affect...






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






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






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






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






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






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






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






30. 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)...






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






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






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






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






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






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






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






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






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






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






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






42. Which eye structure is responsible for color vision?






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






44. Acquired color vision defects...






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






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






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






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






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






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