noun
intraocular muscles
Anatomical term for the muscles inside the eye, including the ciliary muscle and the sphincter and dilator muscles of the iris.
内眼筋は、毛様体筋や瞳孔括約筋などを含む。
The intraocular muscles include the ciliary muscle and the sphincter pupillae.
外眼筋 refers to the extraocular muscles that move the eyeball, while 内眼筋 are the muscles inside the eye controlling lens shape and pupil size.
Compound of 内 (inside) + 眼 (eye) + 筋 (muscle). A straightforward medical term.