_:n1a22901d41ca48799f754a959e69ecafxb57
<http://schema.org/text>
"<p><a href=\"https://ledstrain.org/d/1547/28\" class=\"PostMention\" data-id=\"23027\" rel=\"\" target=\"\">Sunspark</a> Might not have been this forum, but I recall some people describing static \"optical illusions\" causing eyestrain and related symptoms in the past.</p>"
<https://ledstrain.org/d/1547/1>