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Comparison of retinal oxygen delivery (DO2) and oxygen metabolism (MO2) measured within 30 minutes of sham procedure or bilateral common carotid artery occlusion by clamp or ligation in rats. Error bars represent standard deviations. Asterisks indicates significantly lower than sham group and # indicates significantly lower than clamp group. Both DO2 and MO2 were reduced immediately following occlusion of carotid arteries by clamp and ligature.
