April 1983
Volume 24, Issue 4
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Articles  |   April 1983
The effect of phenylephrine hydrochloride on the resting point of accommodation.
Investigative Ophthalmology & Visual Science April 1983, Vol.24, 393-395. doi:https://doi.org/
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      L F Garner, B Brown, R Baker, M Colgan; The effect of phenylephrine hydrochloride on the resting point of accommodation.. Invest. Ophthalmol. Vis. Sci. 1983;24(4):393-395. doi: https://doi.org/.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Previous models for ocular accommodation have suggested a dual sympathetic/parasympathetic innervation to the ciliary muscle. Such models would predict that sympathomimetic drugs should change the resting point or dark focus of accommodation. The effect of an alpha-adrenergic agonist (10% phenylephrine hydrochloride) on accommodation was examined; the results show a decrease in the near point of accommodation, without a change in the resting point of accommodation. These results suggest that the accommodative state of the eye is not the result of a simple balance between sympathetic and parasympathetic innervation as proposed by previous models of accommodation.

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