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. Hereditary color vision defects usually affect...






2. Laser interferometry uses which type of laser light?






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






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






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






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






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






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






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






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






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






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






13. 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)...






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






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






16. Rose bengal is...






17. Which eye structure is responsible for color vision?






18. Illumination for the color plates test...






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






49. Glare testing is used to identify...






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