JOSHI, V G <br/><br/>
Brightness contrast as source of error in the Ishihara test for colour blindness.  [electronic resource] 

 -  The British journal of physiological optics  Oct 1961 
 - 239-42 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0007-1218 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Color Vision Defects--diagnosis<br/>Humans<br/>Vision Tests