I heard that the prescription and eyesight of the glasses are different, so how do I compare them?

Negative eyesight is actually negative.

Then how do you compare the prescription of glasses and vision?

2923 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

Gentleman 9 years ago 0

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