Taken outside in bright sun. Crop for composition. Levels adjustment. Minor USM. Glasses in original were darkly shaded (variable tint glasses); needed to reduce the shading. Selected lenses to a new layer, Screen blending mode. Duplicated that layer (also screen blending), some opacity tweaking. Then selected the eyes (originally almost totally black) to another layer and dodged to try to bring out some details in eyes (not very successfully, as is obvious).