Sunny weather is upon us so here are some tips about “shades”. “Drug store “ sunglasses are pieces of punched out plastic which have distortions which can blur your vision and give you headaches. Sunglasses with lenses which are optically clear are free from distortions and usually more comfortable.
The color of the tint should be grey for two reasons. Fewer people reject grey as opposed to any other color and a dark grey will filter 100%.