Can anyone advise me as to what the test results of eye
tests mean. I assume 20/20 is perfect eyesight, but 20 of
what? But more importantly, what are the implications for
a student of mine who has 6/9 left and right, when wearing
spectacles? 6/5 (part) with contact lenses. What does
this mean?
The person concerned has Keratoconus.
Bryan Jones
London Guildhall University
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Bryan Jones
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