New light on uveitis in ankylosing spondylitis.

Area of Science:

• Ophthalmology
• Rheumatology
• Genetics

Background:

• Inflammatory eye disease, specifically uveitis, is a known complication of ankylosing spondylitis (AS).
• The precise relationship between uveitis and spondyloarthropathy in AS remains poorly understood.

Purpose of the Study:

• To investigate the prevalence and potential triggers of uveitis in a large cohort of ankylosing spondylitis patients.
• To explore the genetic and environmental factors influencing the occurrence and recurrence of uveitis in AS.

Main Methods:

• A study of 1331 consecutive patients with ankylosing spondylitis was conducted.
• Prevalence of uveitis was determined, and family studies of sib pairs were performed.
• Comparisons were made between patients with and without uveitis, and potential trigger factors were analyzed in recurrent cases.

Main Results:

• Uveitis was present in 40% of AS patients (535 subjects), with nearly half experiencing over 5 attacks.
• Family studies showed a low concordance rate (43%) for uveitis among AS-concordant sib pairs.
• No significant differences were found between patients with and without uveitis, and no seasonal, infective, or other correlations were identified for recurrent disease.

Conclusions:

• Genetic background influences susceptibility to uveitis in AS.
• The pattern of uveitis suggests random environmental triggers unrelated to the underlying rheumatological disorder.
• A single case report indicated potential remission of severe uveitis after intrauterine device removal.