The G4027 is for Nd:YAG, 532nm Alignment laser wavelengths. LGF Full View frame with light tan color polycarbonate lenses. Glendale's polymer Diffused Viewing Only (DVO) designed eyewear maximizes visibility, with lightweight frame designs while providing unsurpassed attenuation for the entire range of laser wavelengths. 40 % VLT (visible light transmission). The LGF Full View frame features a one-piece polymer lens with integral molded side shields and adjustable earpieces. It fits over most prescription eyewear and meets ANSI Z136.1 and Z87.1 requirements.