The clinical and demographic details of the patient cohort. Consecutive patients (n = 173) attending the eye casualty unit at the Royal Victoria Eye and Ear Hospital, Dublin, with noninfectious AU without any known systemic associations were recruited to a dedicated research clinic. All patients had HLA-B27 checked and were screened by a rheumatologist for the presence of SpA. Further investigations were undertaken based on clinical history and examination. Values are n (%) unless otherwise specified.
| Characteristics | Values |
|---|---|
| Age, yrs, mean (± SD) | 41.5 (14.4) |
| Male, % | 56 |
| Laterality | |
| Unilateral | 156 (90) |
| Bilateral | 17 (10) |
| HLA-B27 | |
| Positive | 91 (53) |
| Negative | 82 (47) |
| Subsequent systemic diagnosis | |
| Ankylosing spondylitis | 68 (39) |
| Psoriatic arthritis | 3 (< 2) |
| Sarcoidosis | 4 (2) |
| Behçet disease | 1 (< 1) |
| Total | 73 (42) |
| Idiopathic | 100 (58) |
AU: anterior uveitis; SpA: spondyloarthritis.