The effect of timolol on anterior-chamber oxygenation.


Journal Article

The effect of timolol maleate, a nonspecific beta-blocking agent, on anterior-segment oxygenation was studied using oxygen-sensitive microelectrodes inserted into the mid-anterior chamber of 13 cat eyes. The anterior-chamber oxygen tension was monitored continuously for two hours following the topical application of three drops of timolol 0.5%. Although a small, but significant, decline in oxygen tension of 19% was observed over the initial 90 minutes (P less than or equal to .05), the overall 10% decrease at the end of two hours was not considered either clinically or statistically significant when compared with a group of controls. Timolol, since it does not contribute significantly to hypoxia, may therefore be a more prudent choice for lowering intraocular pressure in disorders where hypoxia is believed to play an important role, such as in neovascular glaucoma and sickle-cell hyphema.

Full Text

Cited Authors

  • Pakalnis, VA; Rustgi, AK; Stefansson, E; Wolbarsht, ML; Landers, MB

Published Date

  • August 1987

Published In

Volume / Issue

  • 19 / 8

Start / End Page

  • 298 - 300

PubMed ID

  • 3662313

Pubmed Central ID

  • 3662313

International Standard Serial Number (ISSN)

  • 0003-4886


  • eng