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






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






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






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






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






6. The Ishihara color plates are useful...






7. 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)...






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






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






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






11. Which eye structure is responsible for color vision?






12. Acquired color vision defects...






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






30. Glare testing is used to identify...






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






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






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






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






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






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






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






38. Laser interferometry uses which type of laser light?






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






40. 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?






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






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






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






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






45. Hereditary color vision defects usually affect...






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






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






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






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






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