[Argon laser iridectomy and gonioplasty in the treatment of angle-closure glaucoma].

Treatment of the narrow angle in angle-closure glaucoma depends on iridectomy and mechanical opening of the angle if an argon laser is used for photocoagulation. The effect of the heat is to shrink the iris tissue (gonioplasty) and to free the angle. Maximum power and safety of the laser beam are achieved by utilizing convex contact lenses on the cornea.