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. Illumination for the color plates test...






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






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






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






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






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






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

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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






26. Which eye structure is responsible for color vision?






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






28. Rose bengal is...






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






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






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






32. Hereditary color vision defects usually affect...






33. 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?






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






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






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






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






38. Hereditary color vision defects affect...






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






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






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






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






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






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






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






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






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






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

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






50. 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...