Yoshino H, Suzuki R, Kurimoto S
Department of Ophthalmology, Yamaguchi University School of Medicine, Ube, Japan.
Nippon Ganka Gakkai Zasshi. 1990 Jul;94(7):627-31.
Mammalian pupils constrict in reaction to lights. Miosis occurs via afferent and efferent nerves. Therefore, once the pupil is pretreated with atropine, miosis no longer occurs, even when the retina is intact. We found that hamster pupil constricts in reaction to light in the presence of atropine. We examined the relationship with pupillary size, light intensity, wavelength and intervals of darkness. Pupillary constriction was found when the retina was withdrawn, and the miosis was not affected by autonomic blocking agents, capsaicin pretreatment and tetrodotoxin, a nerve blocking agent. Hamster pupil reacts to lights (visible rays-ultraviolet) in the presence of atropine and in the absence of retinal function.
哺乳动物的瞳孔会对光线产生收缩反应。瞳孔缩小通过传入神经和传出神经发生。因此，一旦瞳孔用阿托品预处理，即使视网膜完好，瞳孔缩小也不再发生。我们发现，在阿托品存在的情况下，仓鼠瞳孔会对光线产生收缩反应。我们研究了其与瞳孔大小、光强度、波长和黑暗间隔的关系。当视网膜被摘除时发现瞳孔收缩，并且这种瞳孔缩小不受自主神经阻断剂、辣椒素预处理和神经阻断剂河豚毒素的影响。仓鼠瞳孔在阿托品存在且无视网膜功能的情况下会对光线（可见光 - 紫外线）产生反应。
