Clinical Course and Pattern of Uveitis in Western Iran

Background: Demographic characteristics apparently play a critical role in the incidence and prevalence of uveitis in different societies. Numerous studies have investigated the demographic-epidemiological factors and clinical patterns of uveitis in Iran; however, no study has been conducted in the west of the country yet. Objectives: To assessed epidemiologic pattern of uveitis in patients residing in the west of Iran. Methods: This study investigated 358 files of uveitis patients referring to the specialized retina-uveitis clinics in a referral hospital in the west of Iran from March 2016 to September 2022. The demographic characteristics, clinical patterns, and complications of uveitis were evaluated in this study. Results: The uveitis patients’ mean age (± SD) at the diagnosis time was 48.14 (± 11.91) years (18 - 72 years), the patients with anterior uveitis had the lowest mean age (45.47 ± 11.54 years), and the patients with panuveitis had the highest mean age (52.90 ± 10.14 years) at the diagnosis time. The prevalence of the disease was equal in both genders; however, posterior uveitis and panuveitis significantly involved males more than females (P < 0.01 and 0.01 respectively). The most common anatomical pattern of involvement belonged to anterior uveitis (34%), followed by panuveitis (23.4%), posterior uveitis (22.9%), and intermediate uveitis (19.5%). The prevalent etiology in anterior, intermediate, and panuveitis were idiopathic and Toxoplasma chorioretinitis was the most common causes in posterior uveitis (34.14%). Moreover, acute clinical course and non-granulomatous pathology were also more prevalent. The most common complications of the disease were cataracts and cystoid macular edema (CME). Also, patients with panuveitis followed by posterior uveitis had the worse visual prognosis. Conclusions: The predominant pattern of involvement in patients referring to the referral center in the west of Iran was in the form of anterior uveitis, acute in terms of clinical course, and non-granulomatous in terms of pathology. This clinical view for evaluation in a referral center differs from the pattern expected to be observed in the general population and even in general ophthalmology centers.