If your prescription for glasses is less than 400, you don't need to convert, just select the corresponding degree.
Convert a glasses prescription to a contact lens prescription | |||
400~750 | 775~1125 | ||
glasses | contact lens | glasses | contact lens |
-4.00 | -3.75 | -7.75 | -7.00 |
-4.25 | -4.00 | -8.00 | -7.25 |
-4.50 | -4.25 | -8.25 | -7.50 |
-4.75 | -4.50 | -8.50 | -7.75 |
-5.00 | -4.75 | -8.75 | -7.75 |
-5.25 | -5.00 | -9.00 | -8.00 |
-5.50 | -5.00 | -9.25 | -8.25 |
-5.75 | -5.25 | -9.50 | -8.50 |
-6.00 | -5.50 | -9.75 | -8.75 |
-6.25 | -5.75 | -10.00 | -8.75 |
-6.50 | -6.00 | -10.25 | -9.00 |
-6.75 | -6.25 | -10.50 | -9.25 |
-7.00 | -6.50 | -10.75 | -9.50 |
-7.25 | -6.50 | -11.00 | -9.75 |
-7.50 | -6.75 | -11.25 | -9.75 |