Retinal melatonin suppressor

Eyewear comprising:

• a wearable frame and at least one optical lens supported by the wearable frame, each of the at least one optical lens comprising a substrate that is substantially transparent to at least a portion of a visible light spectrum and a photoluminescent material applied to only a portion of the substrate that emits electromagnetic energy of at least a specific wavelength after being exposed to a source spectrum of electromagnetic energy.

A coating for a lens comprising:

• a fixation matrix, and nanocrystals in suspension in the matrix, wherein the coating emits photons in a range of approximately 420 to 485 nm wavelength responsive to invisible or near-visible UV light.

A retinal melatonin suppressor comprising:

• a lens and a photoluminescent material including nanocrystals applied to the lens to emit photons at an emitted wavelength toward a retina of a wearer of the suppressor in response to electromagnetic energy of an excitation wavelength incident upon the photoluminescent material, wherein the emitted wavelength is longer than the excitation wavelength.