In experimental investigations with a total of 98 volunteers we have found that only 16.7 % showed a blink reflex, when they have been irradiated with a laser beam arising from a laser class 2 according to IEC 60825-1. In order to review this first experimental results we have performed different field trials on a total of 690 test persons at 670 nm, 635 nm and 532 nm, using semiconductor lasers and a diode-pumped, frequency-doubled neodymium YAG laser. Between 15.7 % and 22.4 % showed, depending on the wavelength, a blink reflex under laser class 2 conditions, where they have been irradiated in an apparatus comparable to a diagnostic ophthalmological device.
Investigations concerning the blink reflex using laser class 2
Ham-Dieter Reidenbach; October 14–18, 2018. "Investigations concerning the blink reflex using laser class 2." Proceedings of the International Congress on Applications of Lasers & Electro-Optics. ICALEO® 2003: 22nd International Congress on Laser Materials Processing and Laser Microfabrication. Orlando, FL, USA. (pp. pp. 57-59). ASME. https://doi.org/10.2351/1.5056564
Download citation file: