Laser Safety Glasses Poly Fit Over Brown 26% VLT. Ultra-light-weight comfortable frame with a double coated scratch-resistant polycarbonate laser filter. The fit-over-prescription style frame offers universal fit with wide field of view. 130 laser filter offers protection from Nd:YAG, plus harmonics, lasers (532 nm, 1064 nm). Optical Density (OD) Specifications: OD 7+ @ 190-534 nm OD 5+ @ 850-1100 nm OD 7+ @ 1064 nm Visible Light Transmission (VLT): 26%