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






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






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






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






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






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






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






8. 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)...






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






10. Laser interferometry uses which type of laser light?






11. Glare testing is used to identify...






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






28. Which eye structure is responsible for color vision?






29. 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...






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






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






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






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






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






35. 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?






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






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






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






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






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






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






42. Acquired color vision defects...






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






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






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






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






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






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






49. Hereditary color vision defects affect...






50. Illumination for the color plates test...






Can you answer 50 questions in 15 minutes?



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