To obtain a retinal disease-treating preparation which contains tranilast and is effective for retinopathy, particularly effective for retinoangiopathy.

This treating preparation contains tranilast [2-(3,4-dimethoxy- cinnamoyl)aminobenzoic acid] or its salt as an active ingredient. It is useful for treating retinopathy such as occlusion of retinal blood vessel, for example, occlusion of retinal vein, retinal vasculitis or diabetic retinopathy, and amelioration of macular edema and recovery of eyesight are observed. Customary components are appropriately formulated to tranilast to prepare capsules, tablets, dust, eye drop, injection solution and the like. The daily dose is 100-1,000mg in portions once to several times in the case of oral administration and is 0.01-5 wt./vol.% in portions once to several times in the case of eye drop.