This study aimed to evaluate the relationship between clinical characteristics and visual acuity in childhood glaucoma. The study included 45 eyes of 31 patients; 33.3% with primary childhood glaucoma and 66.7% with secondary glaucoma; 53.4% of secondary cases had glaucoma associated with non-acquired ocular anomalies. At diagnosis, 41 eyes received glaucoma medical treatment. Age at diagnosis was 9.4 ±13.8 months; 54.8% were bilateral and 45.2% unilateral. IOP was 34.5 ±13.2mmHg. The most common surgery was trabeculectomy and goniotomy. Of cases with primary glaucoma, 46.7% had good final visual acuity and 53.3% were visually impaired. Of those with secondary glaucoma, 86.2% were visually impaired. The authors conclude that even with treatment, two thirds of eyes have poor final vision. Risk factors are secondary glaucoma, age at diagnosis of <3 months and interval to surgery of >3 months. This study provides useful information for discussion with parents.