
1) Medical sign
Found on
https://www.crosswordclues.com/clue/photopsia

Photopsia is the presence of perceived flashes of light. It is most commonly associated with posterior vitreous detachment, migraine with aura, migraine aura without headache, retinal break or detachment, occipital lobe infarction and sensory deprivation (ophthalmopathic hallucinations). Vitreous shrinkage or liquifaction, which are the most commo...
Found on
http://en.wikipedia.org/wiki/Photopsia

appearance of light flashes due to retinal irritation
Found on
http://phrontistery.info/p.html

• (n.) An affection of the eye, in which the patient perceives luminous rays, flashes, coruscations, etc. See phosphene.
Found on
http://thinkexist.com/dictionary/meaning/photopsia/

<medicine> An affection of the eye, in which the patient perceives luminous rays, flashes, coruscations, etc. See phosphene. ... Origin: Gr. Opsis = vision ... (09 Mar 1998) ...
Found on
http://www.encyclo.co.uk/local/20973

(fo-top´se-ә) an appearance as of sparks or flashes, in retinal irritation.
Found on
http://www.encyclo.co.uk/local/21001
Pho·top'si·a noun [ New Latin , from Greek
fw^s ,
fwto`s , light + ... sight.]
(Medicine) An affection of the eye, in which the patient perceives luminous rays, flashes, coruscations, etc. See
phosphene .
Found on
http://www.encyclo.co.uk/webster/P/77

Type: Term Pronunciation: fō-top′sē-ă Definitions: 1. A subjective sensation of lights, sparks, or colors due to electrical or mechanical stimulation of the ocular system. Synonyms: photopsy
Found on
http://www.medilexicon.com/medicaldictionary.php?t=68653

photopsia, photopsy An appearance as of sparks or flashes due to retinal irritation.
Found on
http://www.wordinfo.info/words/index/info/view_unit/1489/3
No exact match found.