瞳孔の運動に関する生理学的研究—瞳孔の近見反応の解析と眼精疲労患者におけるその異常

Physiological study on pupillomotor.:Analysis of pupillary near reflex and abnormalities in asthenopia

　（1）従来原因不明であった眼精疲労のなかに瞳孔反応異常のあるものが発見された。

　（2）生理的瞳孔径，および瞳孔の近見反応は共にドンデルス輻湊線に近似する事が解った。

　（3）調節力の少ない者程，縮瞳率は強く，輻湊調節の過不足を補い合っている事が解った。

　（4）調節は適正な瞳孔径を得るため，縮瞳，散瞳の両側に抑制的に働き，瞳孔径を決定する微調節の役割を果しているものと思われる。

The number of cases of asthenopia is increasing along with an increase in the incedence of near works. There have been various reports and clas-sifications of the causes of asthenopia, but there are many cases in which the causes are inexplainable from the results of conventional examinations. For the analysis of pupillary near reflex, normal subjects (controls) and patients with asthenopia (causes unknown) were chosen. A rotary prism was set to a conventional iriscorder with convergence stimula-tion (HTV. C-301). Accommodation was fixed, and fusional convergence and divergence were pro-duced.