Corrective lenses available with negative correction ranging from -1.0 to -10.0 diopters, graduating in 0.5 diopter increments. Right and left glass are not distinguishable (they are identical in shape). If you would like to have the glasses fitted to the mask, please specify in the order information (in the final step of the order) where you would like the glass to be fitted, thank you (e.g. -2 on the right and -2.5 on the left).
