Nearsighted diopter lenses move the focal point so distant objects snaps into focus underwater.

Despite the name Nearsighted, they improve overall scene clarity across common dive distances by bending light towards the retina.

Because water makes things look larger and closer, many divers choose a slightly lower magnitude than their glasses.

1. Use the Sphere value from your latest prescription.
2. Select the closest minus power in 0.50 steps. Remember to round down toward 0!
   
3. Most divers go 0.50 to 0.75 weaker than their glasses due to water magnification.
   
4. Choose each eye separately if your Sphere values differ.