Clinical statistics of endogenous uveitis: comparison between general eye clinic and university hospital.

We compared uveitis patients who attended a general eye clinic (n = 183) with those who attended the ophthalmology department of a university hospital (n = 550) to examine factors that affect the clinical statistics of uveitis outpatients. We observed that diabetic iritis and herpetic iritis were significantly more frequent in the clinic whereas Vogt-Koyanagi-Harada disease and Behcet's disease were significantly more common in the university hospital. Among the so-called three leading uveitis, Behcet's disease and Vogt-Koyanagi-Harada disease were relatively rare in the general clinic; they might be concentrated in the university hospital setting because these diseases require treatment at specialist hospitals. In addition, uveitis secondary to underlying diseases such as diabetic iritis and transient non-granulomatous iridocyclitis was generally not referred to specialist hospitals. These factors may account for the differences in disease frequencies observed between the two facilities.