Hello David, right now with the Atomic mask. The only optical lens that is available is the full lens is a negative prescription that will be the full lens (for near sighted). If you are looking for a down look mask with a +1.75 lens then I would suggest the XS Scuba Down Look Scuba Dive Mask with Gauge Reader web link:
http://www.scuba.com/scuba-gear-32/027145/XS-Scuba-Down-Look-Mask-with-Gauge-Reader.html. Or if you are looking for a stronger optical lens then we do have a few that we can suggest to you. If you would like to place an order or have any other questions please feel free to give us a call at 1.800.347.2822.
FULL MANUFACTURER’S WARRANTY 
![UltraClear lens features optical quality and distortion free vision](javascript:void(info("/images/ultraclear.jpg"))){kind=link}
![Clear with Blue accents, Clear with Yellow accents, Clear with Pink accents, Clear with Purple accents, Clear with Black accents, Black Silicone with Red accents, Black Silicone with Black accents, Black Silicone with Blue accents, Black Silicone with Red accents, Black Silicone with Yellow accents, Black Silicone with Pink accents, Black Silicone with Purple accents](javascript:void(info("/images/masks/atomic-subframe-colors.jpg"))){kind=link}