Negative eyesight is actually negative.
Then how do you compare the prescription of glasses and vision?
2908 2016-06-26 Gentleman
Glasses lens prescription
Eyesight
-1.50
0.4~0.3
-2.00
0.3~0.2
-2.50
0.2~0.15
-3.00
0.15~0.1
-3.50
0.1~0.09
-4.00
0.09~0.08
-4.50
0.08
-5.00
0.07
-5.50
0.06
-6.00
0.05
-7.00
0.04
-8.00
0.03
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