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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






20. 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...






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






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






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






24. 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?






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






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






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






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






29. Illumination for the color plates test...






30. Rose bengal is...






31. Hereditary color vision defects affect...






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






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






34. Glare testing is used to identify...






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






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






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






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






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






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






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

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






43. 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?






44. Hereditary color vision defects usually affect...






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






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

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47. Laser interferometry uses which type of laser light?






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






49. Acquired color vision defects...






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






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