Blindness and Glaucoma: A Multicenter Data Review from 7 Academic Eye Clinics

Area of Science:

• Ophthalmology
• Clinical Research

Background:

• Glaucoma is a leading cause of irreversible blindness worldwide.
• Early detection and management are crucial to prevent vision loss.

Purpose of the Study:

• To determine the incidence, conversion rates, and risk factors for blindness in European glaucoma patients.
• To identify predictors of blindness development in a large, multicenter cohort.

Main Methods:

• A retrospective multicenter study involving 2402 glaucoma patients.
• Patients were categorized as blind or controls based on visual acuity and visual field loss.
• Data collected included visual acuity, visual field status, intraocular pressure (IOP), and patient demographics.

Main Results:

• Blindness prevalence increased from 11.0% to 15.5% (unilateral) and 1.6% to 3.6% (bilateral) over a mean follow-up of 7.5 years.
• The annual conversion rate to blindness was 1.1%.
• Predictors of blindness included higher initial mean deviation (MD) and intraocular pressure (IOP), and older age at follow-up initiation. Lower final IOP was protective.

Conclusions:

• Approximately 20% of glaucoma patients in this cohort developed blindness.
• Blindness was often associated with late diagnosis/referral and disease progression, even with controlled IOP.
• High initial MD, high initial IOP, and older age are significant risk factors for glaucoma-related blindness.