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For us, eye safety during the use of our products has top priority. For this reason, we test our LED headlights regularly for photobiological safety – far beyond what is required by law – and continuously follow the current research in this field.
By the current state of the art and today's research, there are very few or no clinical observations of thermal damage to the retina caused by LED radiation (see German BfS Workshop, November 2018). In the latest report, the retinal thermal hazard (RTH) of LEDs was rated as non-critical (see Scientific Committee on Health, Environmental and Emerging Risks – SCHEER, “Opinion on potential risks to human health of Light Emitting Diodes”, June 2018), and also current standards, e.g. IEC/TR 62778, do not take RTH into consideration, only the blue light hazard (BLH).
But experience shows that even the BLH of LED lamps can be evaluated as non-critical because the exposure time necessary for LED headlights to cause potential eye damage can hardly ever be reached due to the eyelid reflex or averting of the eyes (see “CIE position statement on the blue light hazard”, April 2019).
Fundamentally, however, we should point out that deliberately staring into bright light sources could lead to a temporary reduction in visual acuity, afterimages, eye irritation and even visual impairment. We therefore advise our customers to use all lamps exclusively for their intended purpose and to avoid staring into the LED headlights when switched on.
