Special Protective Eyewear Cylindrical System (SPECS)

The SPECS lens tint effects on color vision are tabulated as follows:

• Clear. This lens transmits approximately 95 percent of light and has no effect on the color of objects.
• Gray. This filter acts as a sunglass. This filter has minimal effect on the color of objects.
• Green. This filter is designed to protect users from specific wavelengths. This filter markedly attenuates red and mildly attenuates yellow, blue, and brown. Green is enhanced.
• Brown (dark orange). This filter is designed to protect users from specific wavelengths. This filter markedly attenuates all colors, especially blue.