The presently presented inventive lens will provide an eyeglasses/sunglasses wearer with improved perceptions of color saturation and optical contrast without requiring any apparent coloration (except gray) in the transmitted tint (although other colors may be used), promoting a sense of heightened accuracy and differentiation in viewed colors while providing full protection from UV. Further, the lenses of the invention provide increased visual acuity, and maximize the visibility of objects partially obscured by fog or atmospheric haze. Lens embodiments having certain spectral-transmission properties as defined herein achieve one or more of these objects, while filtering out (i.e., providing local/relative minima) of certain human-visible light wavelengths in a manner enhancing crisp color perception. In particular, the present disclosure provides a very thin lens with a tetrachromatic transmittance profile that offers wearers crisp, clear, and vibrant color perception, while reducing overall light transmission in a manner that enhances wearer comfort.
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