Purpose: Anterior uveitis may accompany scleritis. This study was unde
rtaken to analyze the incidence, characteristics, and meaning of uveit
is in the course of scleritis. Methods: Patient characteristics, scler
itis type, ocular complications, and specific systemic diseases were e
valuated in patients with scleritis-associated uveitis; comparisons we
re made between patients with scleritis-associated uveitis and patient
s with scleritis without uveitis. Results: Seventy three (42%) of 172
patients with scleritis had anterior uveitis. Scleritis-associated uve
itis ranged from mild to moderate intensity and always was related to
the presence of active scleritis. Patients with scleritis-associated u
veitis had more necrotizing scleritis (37%, P = 0.0001), decrease in v
ision (49%, P = 0.0046), peripheral ulcerative keratitis (22%, P = 0.0
095), and glaucoma (19%, P = 0.0313) than did patients with scleritis
without uveitis. Patients with scleritis-associated uveitis did not ha
ve any specific associated systemic disease more often than did patien
ts with scleritis without uveitis. Conclusion: Extension of scleral in
flammation to the anterior uveal tract is a consequence of a more seve
re disease with possible ocular complications that may cause progressi
ve visual loss. The occurrence of anterior uveitis in the course of sc
leritis entails a poor ocular prognosis. The authors believe, therefor
e, that the anterior uveal tract should be evaluated at every follow-u
p visit of a patient with scleritis, so that emergence of this importa
nt prognostic condition (anterior uveitis) may be detected promptly an
d systemic therapy instituted appropriately.