Inclusion Criteria:  -Patients aged ≤ 12 years and required surgery for glaucoma following congenital cataract surgery (GFCS) with or without intraocular lens (IOL) implantation.  Exclusion Criteria:  Eyes in which the trabeculotomy involves <180° of Schlemm's canal. Eyes that have synechial angle closure over ≥ 90°. Eyes that have previous procedures other than lensectomy or IOL implantation.