1373 Role of Adenosine in the Control of Choroidal Blood Flow during Changes in Ocular Perfusion PressureSchmidl D; Weigert G; Dorner GT; Resch H; Kolodjaschna J; Wolzt M; Garhofer G; Schmetterer LInvestigative Ophthalmology and Visual Science 2011; 52: 6035-6039