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We are still receiving orders and receiving your masks for prescription, however our office will be closed to the public from March 26th through April 13th. We will only be available via email. Keep Reading »

High Index

Does High Index material really make a difference in my prescription?

If your Rx is + or -4.00 or higher in the sphere power, it does make a difference. High index glass makes the lens thinner and lighter. This is for single vision only in your dive mask.

It does this by bending light waves in a slightly different angle than crown glass.

When mounting into a mask, the thickness can be an issue in higher prescriptions. We can make it work by applying a heavier bevel on the edges of the lens. Our motto is any prescription, any mask, but sometimes with a strong Rx is better to get a mid -volume mask.