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S H Johnson, R F Brubaker, J C Trautman; Absence of an effect of timolol on the pupil.. Invest. Ophthalmol. Vis. Sci. 1978;17(9):924-926.
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Timolol, a relatively new beta-adrenergic blocker which has been found to lower the intraocular pressure in man, has not been observed to have any side effects upon the visual system. This study utilized pupillography to determine the effect of conjunctival instillation of 0.5% timolol ophthalmic solution upon pupillary size and reaction. No clinically significant effect was observed, but a statistically significant decrease in the amplitude of redilation of the pupil was found in the eye that received timolol.
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