Over-glasses for patients or operators with single polycarbonate orange lens which fit over corrective glasses. The glasses have an air ventilation system within the side protections, and the length of the frames can also be adjusted. The frame stems are made from over moulded material to guarantee excellent fit and comfort. Orange lens with scratch-proof and anti-misting coating that protects against impacts, UV rays and blue light (525nm): it improves contrast and enhances visual sharpness to reduce eye fatigue. Ideal for use during dental paste polymerisation operations. Lenses conform to EN166 and EN170 standard requirements. Weight 43 g.