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






2. 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...






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






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






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






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






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






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






9. Rose bengal is...






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






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






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






13. Laser interferometry uses which type of laser light?






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






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






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






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






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






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






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






21. Illumination for the color plates test...






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






23. The Ishihara color plates are useful...






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






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






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






27. Glare testing is used to identify...






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






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






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






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






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






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






34. Hereditary color vision defects usually affect...






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






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






37. 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?






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






39. 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)...






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






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






42. Hereditary color vision defects affect...






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






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






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






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






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






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






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






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