Graefes Arch Clin Exp Ophthalmol
March 2003
Background: beta-Adrenergic relaxation of iris sphincter has been described in many species, including human. It is generally accepted that the size of the pupil is mainly controlled by muscarinic and alpha-adrenergic tonus. This study was undertaken to investigate the interactions between muscarinic and beta-adrenergic drugs in the relaxation of bovine iris sphincter.
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