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Preview: Refractometry (Plus cylinder)

This course has been awarded 1 JCAHPO credit hour. It is intended for beginning and intermediate levels.

This section contains material on refractometry in plus cylinder including actual diagrams of the phoropter with the parts labeled and an actual example of a refractometry in plus cylinder with diagrams of the phoropter and detailed explanations at each step.

After completing this section the student should be able to demonstrate the following:

  • Label/list the parts of the phoropter
  • Correctly read a prescription from the phoropter
  • Correctly put a prescription into the phoropter
  • Describe how to refine sphere power
  • Describe how to refine cylinder axis
  • Describe how to refine cylinder power
  • Follow a refinement step by step
  • List the steps to perform refinement of refractometry
  • Describe how to make sure a patient is not overminused
  • List the steps to perform the red green test
  • List the steps to perform binocular balancing
  • Identify when to perform the red green test
  • Identify when to perform binocular balancing

    • Here is what some ophthalmic personnel who took this course had to say:

    "Please make more topics available, your courses are great!" L.H., COA

    "Very helpful!" A.P., COA

This course should take approximately one hour to complete.

You must correctly answer at least 20 of the 25 questions on the open book post test to earn credit. If you do not successfully pass the post test the first time you may try again at no expense to you. Successful completion of the post-test is required to earn JCHAPO credit.