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You made the right decision to use a lens set kit and frame and a 0.25 Jackson cross cylinder and maybe a 0.50 Jackson cross cylinder to test eyesight. Make certain you review all the information on https://testeyesight.org before starting this test.
Do you have a prior prescription? Answer “NO” if the prescription is very old or if there have been some significant changes in your vision (such as cataract surgery) since your last test.