Another View of Carbon Dioxide and Retrolental Fibroplasia
1 Departments of Ophthalmology and Human Morphology, School of Medicine, Flinders University of South Australia, Bedford Park, South Australia 5042
To the Editor.
Wolbarsht et al1 advanced several hypotheses in their letter regarding the role of CO2 in retrolental fibroplasia. We take issue with their letter on the following grounds: 1. No evidence is presented that levels of retinal Pco2 rise during O2 induced retinal vasoconstriction. CO2 has a high diffusion coefficient, 20 times that of oxygen2 and we suggest that such CO2 produced in the retina would rapidly diffuse the short distance to the high-flow choroidal circulation. 2.




