Juvenile-onset open-angle glaucoma - A clinical and genetic update

Area of Science:

• Ophthalmology
• Genetics
• Medical Science

Background:

• Juvenile-onset open-angle glaucoma (JOAG) is a form of primary open-angle glaucoma diagnosed before age 40.
• It can be familial or non-familial, with myocilin mutations being a common genetic association.
• JOAG presents with elevated intraocular pressure (IOP), often requiring surgical intervention.

Purpose of the Study:

• To summarize the key characteristics, pathophysiology, and management of juvenile-onset open-angle glaucoma.
• To highlight the importance of early diagnosis and lifelong monitoring in JOAG patients.
• To discuss the potential of emerging gene-based therapies for JOAG.

Main Methods:

• Review of existing literature on juvenile-onset open-angle glaucoma.
• Analysis of clinical presentation, genetic associations, and pathological mechanisms.
• Evaluation of current and future treatment strategies.

Main Results:

• JOAG is characterized by high IOP, male preponderance, and frequent association with myopia.
• Pathophysiology involves immaturity of conventional outflow pathways.
• Optic nerve head features include large discs with significant cupping due to high IOP-induced damage.

Conclusions:

• JOAG progression rates are similar to adult glaucomas, but the earlier onset leads to higher projected disability.
• Prompt management, early diagnosis, and continuous monitoring are vital for preventing disease progression.
• Gene-based therapies represent a promising future direction for JOAG treatment.