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. Laser interferometry uses which type of laser light?






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






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






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






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






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






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






9. The IOLMaster must be calibrated daily using a...






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






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






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






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






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






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






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






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






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






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






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






21. Acquired color vision defects...






22. Hereditary color vision defects usually affect...






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






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






25. Which eye structure is responsible for color vision?






26. 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?






27. The Ishihara color plates are useful...






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






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






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






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






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






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






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






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






36. Hereditary color vision defects affect...






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






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






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






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






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






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






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






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






45. 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?






46. Illumination for the color plates test...






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






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






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






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