[Non-granulomatous anterior uveitis and HLA-B27 antigen].
In Caucasians, there is close correlation between acute anterior uveitis and histocompatibility antigen HLA-B27. But in Japanese, this is not clear. Therefore, we examined 58 patients with non-granulomatous anterior uveitis (NGAU) about HLA typing in our uveitis clinic at Tokyo Women's Medical College Hospital. HLA-B27 was identified in 20 out of 58 patients (34.5%) with NGAU and it was statistically significant. We also studied the clinical features of patients with HLA-B27 positive NGAU. We found that in HLA-B27-positive NGAU, the visual acuity was more strongly affected during the attack and the duration of inflammation was longer than HLA-B27 negative NGAU patients. The duration of the first attack was longer than re-attack, and the duration of the first attack was longer than HLA-B27 negative NGAU patients. It was less commonly associated with systemic disorders in Japanese HLA-B27 positive anterior uveitis than in Caucasian. However, in Japanese NGAU patients without systemic disorders, there was the same tendency concerning the HLA-B27 positive rate as in Caucasians.
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