Effects of subconjunctival injection of mitomycin-C on iridial circulation in rabbits.

Abstract:

PURPOSE:To determine the effects of a subconjunctival injection of mitomycin-C (MMC) on iridial circulation in rabbits. METHODS:Dutch rabbits anesthetized with pentobarbital received a 0.2-ml subconjunctival injection of 0.4 mg/ml or 0.1 mg/ml MMC; the contralateral eye received 0.2 ml physiological saline. Intraocular pressure (IOP) and NB( iris), a quantitative index of iridial tissue blood velocity, were measured up to 24 hours after treatment. RESULTS:At a dosage of 0.4 mg/ml MMC, NB iris obtained from the iridial area adjacent to the injection site decreased significantly by 13.6% and 18.6% at 1 and 2 hours (P = 0.03, 0.01, respectively) after treatment; NB iris obtained on the contralateral side of the injection showed no significant change. In eyes treated with 0.1 mg/ml MMC, NB iris did not change significantly. The mean IOP was significantly lower by 3.1, 3.0, and 1.8 mm Hg at 6, 12, and 24 hours after the 0.4 mg/ml injection of MMC compared with the fellow eyes (P = 0.03, 0.01, and 0.03, respectively), the IOP decreased by 1.7 mm Hg at 4 hours in the eyes treated with 0.1 mg/ml MMC (P = 0. 04). CONCLUSIONS:Subconjunctival injections of 0.2 ml of 0.4 mg/ ml MMC caused not only a significant decrease of IOP but also a transient but significant effect on iridial circulation.

journal_name

Curr Eye Res

journal_title

Current eye research

authors

Tomidokoro A,Araie M,Tamaki Y,Muta K

doi

10.1076/ceyr.19.2.197.5327

subject

Has Abstract

pub_date

1999-08-01 00:00:00

pages

197-200

issue

2

eissn

0271-3683

issn

1460-2202

journal_volume

19

pub_type

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