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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






16. Illumination for the color plates test...






17. 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...






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






19. Acquired color vision defects...






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






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






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






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






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






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






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






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






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






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






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






31. Rose bengal is...






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






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






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






35. The Ishihara color plates are useful...






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






37. 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?






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






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






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






41. Laser interferometry uses which type of laser light?






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






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






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






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






46. Hereditary color vision defects usually affect...






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






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






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






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