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






2. Glare testing is used to identify...






3. Hereditary color vision defects affect...






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






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






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






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






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






9. 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?






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






25. Laser interferometry uses which type of laser light?






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

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






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






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






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






31. Illumination for the color plates test...






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






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






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






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






37. Which eye structure is responsible for color vision?






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






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






40. The Ishihara color plates are useful...






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






42. Rose bengal is...






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






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






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






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






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






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






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






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

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