Excimer and UV lasers are indispensable in refractive eye surgery (LASIK) and dermatological treatment, where they operate with absolute precision. The treating practitioner requires 100 per cent protection of their eyesight against invisible reflected radiation, but there must be no colour distortion of the tissue being treated. These filters meet the most stringent requirements of the EN 207 standard and feature completely clear lenses for flawless clinical practice.