How to choose the right refractive index for yourself
1.60 Index Lens
1.67 Index Lens
1.74 Index Lens
Feature
First colGood for strong prescriptionsumn
Good for extra-strong prescriptions
Ultra-thin& Good for the highest prescriptions
SPH
+2.00/-4.00 Or Below
+5.00/-7.00 Or Below
+8.00/-16.00 Or Below
CYL
+/-3.00 Or Below
-2.25 to -3.00 Or +2.25 to +4.00
-4.25 to -6.00 Or +4.25 to +6.00



