1. 
   biophotometer
   An obsolete instrument once used for measuring the rate and degree of dark adaptation, as in vitamin A deficiency. ... Compare: adaptometer. ... (05 Mar 2000) ...
   Found op http://www.mondofacto.com/facts/dictionary?biophotometer
   
   
2. 
   biophotometer
   biophotometer An obsolete instrument once used for measuring the rate and degree of dark adaptation, as in vitamin 'A' deficiency.
   Found op http://www.wordinfo.info/words/index/info/view_unit/2803/
   
   

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