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Br J Ophthalmol 86:1143-1147 doi:10.1136/bjo.86.10.1143
  • Original Article
    • Clinical science

Effect of inhalation of different mixtures of O2 and CO2 on retinal blood flow

Table 3

Baseline values of retinal blood flow (RBF), vessel diameter (D), and retinal blood velocity (Vel) (n=12; means (SD)) before inhalation of different mixtures of O2 and CO2

Baseline
*Denotes RBF through one specific retinal vein and not total RBF.
RBF* (μl/min)
    100% O2 10.5 (4.5)
    97.5% O2 + 2.5% CO2 10.2 (4.3)
    95% O2 + 5% CO2 10.8 (4.1)
    92% O2 + 8% CO2 9.7 (4.0)
D (RVA) (μm)
    100% O2 158 (15)
    97.5% O2 + 2.5% CO2 156 (17)
    95% O2 + 5% CO2 156 (16)
    92% O2 + 8% CO2 155 (13)
Vel (LDV) (cm/s)
    100% O2 1.67 (0.44)
    97.5% O2 + 2.5% CO2 1.67 (0.53)
    95% O2 + 5% CO2 1.77 (0.49)
    92% O2 + 8% CO2 1.62 (0.47)

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