Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1988 Jul;47(1):87-96.
doi: 10.1016/0014-4835(88)90026-7.

The calibre changes of retinal vessels subject to prolonged hyperoxia

S Hague  1 , D W Hill, A Crabtree
Affiliations

The calibre changes of retinal vessels subject to prolonged hyperoxia

S Hague et al. Exp Eye Res. 1988 Jul.

Abstract

The constriction of retinal vessels occurring in response to breathing 100% oxygen was studied in 10 normal subjects over a period of 30 min. Brachial blood pressure, radial pulse and end tidal CO2 were recorded throughout. The mean arteriolar constriction was 15.3% +/- 4.6 and venous constriction 21.8% +/- 4.3. Time constants (the time for 95% of the maximal response to have occurred) were 2.25 min +/- 0.75 and 2.37 min +/- 0.57 for arterioles and veins respectively. A highly variable late vascular response was recorded. A small proportion of arterial vessels showing a response were nonuniform while a larger proportion of veins showed a significant dilatation.

PubMed Disclaimer

Publication types