Atropine is the drug of choice in –

First let me clear one thing that the drug of choice for acute anterior uveitis (iridocyclitis) is the topical steroids. Topical mydriatic - cycloplegic (Atropine) are given as supportive-measure. However, in every patient of acute anterior uveitis, the treatment is started with a combination of these two (not as a single agent among either of two).