Visual Angle (source: Wikipedia 2008 CC-A Ojosepa) angular size http://en.wikipedia.org/wiki/Visual_angle Retinal Images Wikipedia http://en.wikipedia.org/wiki/Visual_angle Visual Angle (source: Wikipedia 2008 CC-A Ojosepa) Visual Angle (source: Wikipedia 2008 CC-A Ojosepa) http://en.wikipedia.org/wiki/Visual_angle visual angle English English visual angle visual angle more from Wikipedia visual angle Wikipedia English