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The effects of 100% oxygen and 10% carbon dioxide on the choroidal circulation were studied by the radioactive krypton desaturation technique in anesthetized cats. One hundred percent oxygen caused an increase in choroidal vascular resistance (CVR) and a decrease in mean arterial pressure (MAP), both of which resulted in a slight decrease in choroidal blood flow (CBF). Ten percent carbon dioxide caused a marked decrease in CVR, a variable change in MAP, with a new increase in CBF.
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Ephraim Friedman (1972) studied this question.
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