Glaucoma in children is one of the refractory glaucoma, treatmentdepends upon two ideas either increase filtration or decrease production.Our thesis concerned about decrease production, there are severalmethods for decreasing production of aqueous humor, traditionallycyclocryotherapy, with its severe complication, Previous clinical studieshave confirmed that cyclodiode treatment is reasonably effective andsafe.We present data on a group of pediatric patients (age<14 years) withrefractory glaucoma who underwent cyclodiode treatment at theDepartment of Pediatric Ophthalmology, with the aim to evaluateeffectiveness and safety of this procedure, and up till now no exactparameter for treatment.