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






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






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






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






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






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






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






8. Rose bengal is...






9. 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?






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






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






12. 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?






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






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






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






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






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






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






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






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






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






22. 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)...






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






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






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






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






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






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






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






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






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






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






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






34. Glare testing is used to identify...






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






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






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






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






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






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






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






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






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






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






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






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






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






48. Illumination for the color plates test...






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






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