internal ocular muscle

Japanese: internal ocular muscle（英語表記）internalocularmuscle

...On the other hand, the function of dispersing the gaze of the convergent eyes to the left and right is called divergence, which is caused by the action of the lateral rectus muscles of both eyes.
[Internal ocular muscle]
There are pupillary muscles and ciliary muscles. The pupillary muscles consist of the sphincter pupillae and the dilator pupillae, which together control pupillary movement (the movement that changes the size of the pupil).

*Some of the terminology that refers to "internal ocular muscle" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…一方，輻湊していた両眼の視線を左右に分散する機能が開散で，逆に両眼の外直筋の作用による。眼球運動
［内眼筋internal ocular muscle］
　瞳孔筋と毛様体筋がある。瞳孔筋は瞳孔括約筋と瞳孔散大筋からなり，ともに瞳孔運動(ひとみの大きさを変化させる運動。…

※「internal ocular muscle」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典第２版について | 情報

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