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Sympathetic Pupillary Tone in Old Age
Amos D. Korczyn, MD, MSc;
Netanel Laor, MD;
Pinchas Nemet, MD
Arch Ophthalmol. 1976;94(11):1905-1906.
Abstract
In an attempt to determine whether autonomic neural factors might be involved in senile miosis, we tested pupillary responses to agents acting on the ocular sympathetic system in old subjects and compared them to responses in young adults. Our results suggest that sympathetic tone is decreased in the elderly. The dilator pupillae muscle does not lose its sensitivity to norepinephrine with age.
Author Affiliations
From the Department of Physiology and Pharmacology, Sackler School of Medicine, Tel Aviv University, Ramat Aviv, (Drs Korczyn and Laor), and Department of Ophthalmology, Ichilov Municipal Government Hospital (Dr Nemet), Tel Aviv, Israel.
Footnotes
Accepted for publication April 1, 1976.
Reprint requests to Department of Physiology and Pharmacology, Sackler School of Medicine, Tel Aviv University, Ramat Aviv, Israel (Dr Korczyn).
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