JAMES W Is the entire lens at the chosen Diopter or part of the lens and do we have a choice?
ROY D The Atomic Aquatic Subframe mask is designed so that the lens can be installed as a LH lens or a RH lens. The lenses are purchased individually to meet the required diopter for each eye.
The lens can be installed by yourself but I had mine installed by Atomic Aquatics for free.
Maybe the warranty is void if one were to install it by yourself. Something to consider.
STEVEN B Entire lens is and I don't think there is a choice.
MICHAEL V The entire lens. The margain along the nose is a bit fuzzy. Overall great lenses.