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






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






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






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






5. Illumination for the color plates test...






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






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






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






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






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






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






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






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






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






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






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






17. Hereditary color vision defects usually affect...






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






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






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






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






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






23. Rose bengal is...






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






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






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






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






28. Which eye structure is responsible for color vision?






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






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






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






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






34. 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?






35. The Ishihara color plates are useful...






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






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






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






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






40. Acquired color vision defects...






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






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






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






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






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






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






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






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






49. Glare testing is used to identify...






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