Related Experiment Video
Updated: Dec 4, 2025

Assessing Early Stage Open-Angle Glaucoma in Patients by Isolated-Check Visual Evoked Potential
Published on: May 25, 2020
Childhood Glaucoma Profile in a Brazilian Tertiary Care Center Using Childhood Glaucoma Research Network
Nara L Lopes1, Carolina P B Gracitelli1,2, Christiane Rolim-de-Moura1
1Department of Ophthalmology and Visual Science, Federal University of São Paulo.
Insights
The Childhood Glaucoma Research Network (CGRN) classification effectively categorizes pediatric glaucoma subtypes. This standardized approach aids diagnosis and management, improving physician communication and future research in childhood glaucoma.
Area of Science:
- Ophthalmology
- Pediatric Medicine
- Medical Classification Systems
Background:
- Childhood glaucoma encompasses a group of rare, severe eye conditions.
- Accurate classification is crucial for effective diagnosis, treatment, and research.
- The Childhood Glaucoma Research Network (CGRN) developed a new classification system.
Purpose of the Study:
- To apply the CGRN classification to children diagnosed with glaucoma in a Brazilian tertiary care center.
- To determine the prevalence and characteristics of each childhood glaucoma subtype.
- To evaluate the utility of the CGRN classification in a real-world clinical setting.
Main Methods:
- Retrospective analysis of medical records from a pediatric glaucoma clinic (January 2010 - January 2018).
- Data collected included initial and reclassified diagnoses (CGRN), age, sex, visual acuity, and affected eye.
- Patients were categorized according to the 7 CGRN classification groups.
Main Results:
- 496 patients with confirmed childhood glaucoma or glaucoma suspect were analyzed.
- Mean age at diagnosis was 3.62 years; 56.65% were male, and 81.16% had bilateral disease.
- Reclassification using CGRN changed 48.59% of initial diagnoses; primary congenital glaucoma (43.95%) was most common, juvenile open-angle glaucoma (0.40%) least common.
Conclusions:
- The CGRN classification is a valuable tool for categorizing childhood glaucoma.
- A standardized classification system improves diagnosis, management, and communication among healthcare professionals.
- Implementing the CGRN classification can enhance future research endeavors in pediatric glaucoma.
Purpose:
To apply the Childhood Glaucoma Research Network (CGRN) classification in children from a pediatric glaucoma outpatient clinic in a tertiary Brazilian care center to better understand the prevalence and the demographic and clinical characteristics of each subtype of childhood glaucoma.
Methods:
This was a retrospective study in which medical records were collected from patients assisted in childhood glaucoma's clinic at the Department of Ophthalmology and Visual Sciences, Federal University of São Paulo from January 2010 to January 2018. The initial diagnosis and new diagnosis according to CGRN classification were collected. In addition, age, sex, visual acuity, and affected eye were recorded.
Results:
From 624 ophthalmic consultations in the clinic, 496 had confirmed diagnosis of childhood glaucoma or glaucoma suspect. Mean age at diagnosis of the entire group was 3.62±4.23 years (range, 0 to 17 y). Two hundred eight-one (56.65%) of all patients were male and 349 patients (81.16%) had bilateral disease. All patients fit 1 of the 7 categories of the new classification. In all, 48.59% of diagnoses were changed upon reclassification. According to CGRN classification, 220 patients (44.35%) had primary glaucoma (juvenile open-angle glaucoma and primary congenital glaucoma); 210 patients (42.34%) had secondary glaucoma (glaucoma associated with nonacquired ocular anomalies; glaucoma associated with nonacquired systemic disease or syndrome; glaucoma associated with acquired condition; and glaucoma following cataract surgery); and 66 patients (13.31%) were glaucoma suspect. The most common diagnoses found were primary congenital glaucoma with 218 cases (43.95%) and the last common diagnosis was juvenile open-angle glaucoma with 2 cases (0.40%).
Conclusion:
The CGRN classification provides a useful method for classifying childhood glaucoma. A single, standardized classification system is important for diagnosis and management these patients, in addition, may improve physician communication, and future research.
Related Concept Videos
Glaucoma: Overview
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Angle Closure Glaucoma: Treatment
Photoreceptors and Visual Pathways

