1. 
   Optogram
   Op'to·gram noun [ Opt ic + - gram : confer French optogramme .] (Physiol.) An image of external objects fixed on the retina by the photochemical action of light on the visual purple. See Optography .
   Found op http://www.encyclo.co.uk/webster/O/27
   
   
2. 
   optogram
   <physiology> An image of external objects fixed on the retina by the photochemical action of light on the visual purple. See Optography. ... Origin: Optic + -gram: cf. F. Optogramme. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?optogram
   
   
3. 
   optogram
   (op´to-gram) the visual image formed on the retina by bleaching of visual purple under the influence of light.
   Found op http://www.encyclo.co.uk/local/21001
   
   
4. 
   Optogram
   • (n.) An image of external objects fixed on the retina by the photochemical action of light on the visual purple. See Optography.
   Found op http://thinkexist.com/dictionary/meaning/optogram/
   
   

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