期刊
JOURNAL OF CATARACT AND REFRACTIVE SURGERY
卷 37, 期 3, 页码 486-489出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jcrs.2010.09.026
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PURPOSE: To evaluate the effect of brimonidine tartrate 0.10% ophthalmic solution on pupil diameter under light and dark luminance conditions. SETTING: Ophthalmology Department, Tel Aviv Medical Center, Tel Aviv, Israel. DESIGN: Case series. METHODS: The pupil diameter was measured with a Colvard pupillometer in eyes of healthy volunteers under light (5.0 candelas [cd]/m(2)) and dark (0.0 cd/m(2)) luminance conditions before brimonidine 0.10% instillation and after 30 minutes, 3 hours, and 6 hours. RESULTS: The mean age of the 26 volunteers (52 eyes) was 34.73 years (range 19 to 60 years). Under light conditions, the mean pupil diameter was 4.98 mm +/- 0.83 (SD) before instillation of brimonidine 0.10% and 4.64 +/- 0.82 mm after instillation. The difference was not statistically significant, with 13.4% of eyes having a clinically significant reduction (>1.0 mm) in pupil diameter after 6 hours. Under dark conditions, the mean pupil diameter was 6.76 +/- 1.08 mm before instillation of brimonidine 0.10% and 5.30 +/- 0.85 mm after instillation; the difference was statistically significant (P < .001). There was a clinically significant reduction in pupil diameter after 6 hours in 90.4% of eyes. The antimydriatic effect under dark luminance conditions was more pronounced in eyes with light irides. CONCLUSIONS: Brimonidine 0.10% ophthalmic solution had an antimydriatic effect under dark luminance conditions and had a negligible effect on pupil diameter under light luminance conditions. The effect was similar to that reported in studies using higher concentrations of brimonidine.
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