| March 23rd, 2011 &lt;a href=&quot;http://www.vimeo.com/12904359&quot; shape=&quot;rect&quot;&gt;http://www.vimeo.com/12904359&lt;/a&gt; “A phosphene is an entoptic phenomenon characterized by the experience of seeing light without light actually entering the eye . The word phosphene comes from the Greek words phos (light) and phainein (to show). Phosphenes are flashes of light, often associated with optic neuritis