Paul Glaucoma Implant Versus Ahmed Glaucoma Valve in Childhood Glaucoma

Inclusion Criteria: * Childhood glaucoma patients (whether primary or secondary) including Juvenile open angle glaucoma if the age at the time of surgery was ≤18 years. * The included patients are those with refractory glaucoma who require a tube to control their intraocular pressure. Exclusion Criteria: * Any patient with incomplete data or has a follow-up less than 1 year will be excluded from the study.