Your web site user interface and performance have substantially improved in the last eleven years. One nit is that your lens refraction page insists on cylindrical specs in a limited format that is not universally adhered to. +1.5@ 5 degrees, -1.5@ 95 degrees, +1.5@ 185 degrees, and -1.5@ 275 degrees are all equivalent but your patrons may not know that and either choose a wrong value or get frustrated and quit. Just saying...