I am curios to find out why you wish to know this. The eye has a remarkable ability to recover from bright light source so to damage the retina enough to achieve total blindness one would need to look into a bright light source (such as an arc light at close range) for quite while, and this is likely to take a lot of will power. And believe me there is a distinct such an injury is VERY likely to be EXTREMELY painfull. DEFINITELY NOT RECOMMENDED. Lindsay ----- Original message ----- From: "David Turk via luv-talk" <luv-talk@luv.asn.au> To: luv-talk@luv.asn.au Subject: [luv-talk] How many Lumens can blind you? Date: Tue, 03 Jul 2018 03:45:18 +1000 https://en.wikipedia.org/wiki/Lumen_(unit) _______________________________________________ luv-talk mailing list luv-talk@luv.asn.au https://lists.luv.asn.au/cgi-bin/mailman/listinfo/luv-talk