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One item is filed under this topic.
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Percentage change in refractive error |
2019-04-04 |
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From Ammara:
Hi, I'm trying to figure out how a paper I'm looking at has found a percentage from the numbers below. its a paper comparing two lenses. it says that the new lenses 'slowed the progression of refractive error by approximately 50%'.
the refractive error with the old lenses was -2.26 after two years it was -3.28
the refractive error with the new lenses was -2.24 after two years the refractive error is - 2.75
Thank you so much for your help it is most appreciated!
Answered by Penny Nom. |
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