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






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






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






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






5. Which eye structure is responsible for color vision?






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






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






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






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






10. Hereditary color vision defects affect...






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






12. 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)...






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






14. Glare testing is used to identify...






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






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






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






18. Laser interferometry uses which type of laser light?






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






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






21. 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?






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






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






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






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






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






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






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






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






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






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






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






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






34. Illumination for the color plates test...






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






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






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






38. Rose bengal is...






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






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






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






42. 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...






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






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






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






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






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






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






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






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