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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

The effect of daily use of brimonidine tartrate on the dark-adapted pupil diameter.

PURPOSE: To investigate the effect of daily brimonidine tartrate 0.15% on the dark-adapted pupil diameter. DESIGN: Observational case series. METHOD: Ten normal volunteers administered brimonidine to their right eyes once daily. Four to six hours later, infrared pupil photographs were taken after dark adaptation. Measurements were performed at baseline; on treatment days 1, 5, 11, and 18; and on washout days 1 and 2. RESULTS: One subject had no response. The nine responding subjects showed an average maximum antimydriatic effect of -1.63 mm (range, -0.57 mm--2.30 mm); all subjects experienced tachyphylaxis. Five subjects showed rebound mydriasis (mean maximum rebound +0.87 mm larger than baseline; range 0.50 mm-1.22 mm). The untreated pupil also responded, showing antimydriasis (two subjects), rebound mydriasis (two subjects), or paradoxical direct mydriasis (one subject). CONCLUSIONS: Once-daily use of brimonidine tartrate to prevent dark-induced pupil dilation can lead to tachyphylaxis and rebound mydriasis.[1]

References

  1. The effect of daily use of brimonidine tartrate on the dark-adapted pupil diameter. Brown, S.M., Khanani, A.M., McCartney, D.L. Am. J. Ophthalmol. (2004) [Pubmed]
 
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