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






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






3. Laser interferometry uses which type of laser light?






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






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






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






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. Pachymetry readings are routinely taken prior to...






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






10. Acquired color vision defects...






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






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






13. 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?






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






33. Glare testing is used to identify...






34. 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...






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






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






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






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






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






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






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






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






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






44. Which eye structure is responsible for color vision?






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






46. The Ishihara color plates are useful...






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






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






49. Hereditary color vision defects affect...






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