Fig. 17. Improvement in signs and symptoms in a double-blind crossover trial of oxyphenbutazone (Tandearil) ointment, betamethasone (Betnasol) ointment, and placebo ointment in the treatment of episcleritis. Although active preparations improve episcleritis at a faster rate than the placebo, the condition resolves spontaneously within a month. (Watson PG, McKay DR, Clemmett RS et al: Treatment of episcleritis. Br J Ophthalmol 57: 866–870, 1973)