The purpose of this study was to report a case of nanophthalmos with unusual rapid resolution of exudative retinal detachment, which had developed the fifth day after filtering surgery with only topical corticosteroid therapy. Five days after an uncomplicated trabeculectomy for the management of glaucoma, the patient developed exudative retinal detachment. Without choroidal drainage and any other treatment, exudative retinal detachment started resolving in 2 days and disappeared in 2 weeks under only topical corticosteroid therapy. Topical corticoid therapy alone may be sufficient to achieve quick resolution of exudative retinal detachment secondary to glaucoma surgery in nanophthalmic eyes.