A new analysis of 766 people suggests that inflammation may play a role in a specific type of glaucoma called normal tension glaucoma (NTG). In NTG, the optic nerve is damaged even though eye pressure is normal. Researchers found that people with NTG had significantly higher levels of C-reactive protein (CRP), a marker of inflammation in the blood, compared to people without glaucoma. The difference was large enough to be considered meaningful.
But the story is different for the more common form of glaucoma, primary open-angle glaucoma (POAG). In that group, CRP levels were not significantly different from controls. That suggests the inflammation link may be specific to NTG, not all glaucomas.
The study combined results from several smaller studies, which gives more statistical power. However, the researchers caution that CRP is not ready to be used as a diagnostic test for NTG. More research is needed to confirm whether CRP can help identify people at risk or guide treatment. The findings are an early step, not a final answer.
For now, if you have NTG, this doesn't change your care. But it opens a new avenue for understanding why some people develop this form of glaucoma and how inflammation might be involved.
