Glasses that filter out ultraviolet (UV) light are extremely important in protecting our eyesight. UV filters protect our eyes from harmful blue light and help protect against macular degeneration. Glasses are available in a wide variety of fitover and non-fitover styles. NoIR is a brand of sun filters which offers lots of different filter colors to address different visual needs. The different colored filters block different amounts of visual light transmitted and can address different visual needs such as glare reduction, enhanced visual acuity, or contrast enhancement. Cocoon brand sunglasses offer polarization in many of their glasses. Polarization significantly cuts glare and therefore can reduce eyestrain.