uniformly tinted lens
Lens made from material in which either the tint is incorporated throughout, or which, after manufacture, is surface-treated to provide a uniform tint. NOTE: Where the tint is dispersed uniformly though the material of the spectacle lens (i.e. a solid tinted lens), the luminous transmittance will vary with the lens thickness as a result of its dioptric power. Such a variation does not mean that the lens is classed as a gradient tinted lens.