Figure 3
From: Reactivity in the human retinal microvasculature measured during acute gas breathing provocations
The proportional change from all 70 vessel segments analysed following isocapnic hyperoxia (A) and isoxic hypercapnia (B) with colored data points representing vessel segments demonstrating a definite response (whose 2 SEM error bars do not encompass zero), and grey data points representing vessel segments showing no measurable response (whose 2 SEM error bars encompass zero). There was a generalized constriction (A) following isocapnic hyperoxia and a generalized dilation (B) following isoxic hypercapnia. Proportional responses did not vary as a function of vessel size.
