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20/20

20/30

20/40

20/50

20/70

20/100

20/150

20/200

 Approximate Nearsighted Rx 

20/20 : 0D

20/30 : -0.5D

20/40 : -0.75D

20/50 : -1.00D

20/70 : -1.25D

20/100 : -1.50D

20/150 : -1.75D

20/200 : -2.00D

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