Serum Vitamin D Levels as Biomarkers in Patients with Autoimmune Uveitis and their Possible Correlation with Disease Activity.

This study investigated the correlation between serum vitamin D levels and intraocular inflammation in patients with autoimmune uveitis (AIU). We evaluated 67 patients with active and inactive AIU and measured their serum 25-hydroxyvitamin D [25(OH)D] concentration, sun exposure habits, number of relapses, and complications. Of the patients evaluated, 85% had significantly lower vitamin D levels, and patients with active uveitis had lower 25(OH)D levels than those with inactive uveitis.