[Thymoxamine and angle-closure glaucoma].

Thymoxamine is a selective alpha sympathetic blocking agent which may be used to stop the mydriasis induces by phenylephrine, ("safe mydriasis"), to differentiate an open but narrow angle glaucoma from an angle closure glaucoma, to treat an acute closure and to induce miosis without shallowing of the anterior chamber before laser trabeculoplasty.