sentences:  Laser goniotomy is also known as goniophotoablation and laser trabecular ablation .In many patients suffering from congenital glaucoma, the cornea is not clear enough to visualize the anterior chamber angle.Although an endoscopic goniotomy, which employs an endoscope to view the anterior chamber angle, may be performed, a trabeculotomy which accesses the angle from the exterior surface of the eye, thereby eliminating the need for a clear cornea, is usually preferred in these instances.