Identifying risk factors for blindness from primary open-angle glaucoma by race: a case-control study

Area of Science:

• Ophthalmology
• Glaucoma Research
• Public Health

Background:

• Primary open-angle glaucoma (POAG) is a leading cause of irreversible blindness.
• Understanding factors contributing to blindness in POAG is crucial for effective treatment strategies.
• Racial disparities in glaucoma outcomes necessitate targeted research.

Purpose of the Study:

• To investigate factors associated with blindness in black and white patients diagnosed with primary open-angle glaucoma (POAG).
• To compare clinical characteristics and treatment outcomes between blind and non-blind POAG patients stratified by race.

Main Methods:

• Retrospective case-control study matching legally blind POAG patients (cases) with non-blind POAG patients (controls) on age, race, and gender.
• Inclusion of 37 black and 19 white case-control pairs.
• Comparison of clinical variables at initial presentation and during follow-up.

Main Results:

• Black and white POAG cases and controls exhibited similar characteristics at presentation.
• Over follow-up, black POAG cases underwent significantly more glaucoma surgeries (2.4 vs. 1.2, p=0.001) than controls.
• Glaucoma surgery was associated with blindness in black patients (OR 1.6) but not in white patients (OR 1.5).

Conclusions:

• Initial risk factors for blindness in POAG were similar between black and white patients.
• Black POAG patients required more glaucoma surgeries during follow-up compared to controls, correlating with blindness.
• No significant difference in surgical intervention or medication changes was observed between white cases and controls.