Color Blindness Lens Blank Pair (6-base), Mirrored Corrects red-green colorblindness. Based on fundamental discoveries by Caltech and Princeton scientists on the origins of color vision. Take these uncut (6-base curvature) lenses to your local optometrist to have them cut for frames. (We also sell uncut 8-base, clip-on, and prescription-grade lenses.) 6-base, 2mm, polycarbonate, mirrored. UV protection, anti-reflective.