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






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






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






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






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






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






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 IOLMaster must be calibrated daily using a...

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






10. Hereditary color vision defects affect...






11. Acquired color vision defects...






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






13. Which eye structure is responsible for color vision?






14. 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...






15. Laser interferometry uses which type of laser light?






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






17. 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?






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






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






20. 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?






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






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






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






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






25. Hereditary color vision defects usually affect...






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






27. The Ishihara color plates are useful...






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






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






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






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






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






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






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






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






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






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






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






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






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






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






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






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






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






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






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






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






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