Editor,—Schwartz–Matsuo syndrome describes a condition characterised by rhegmatogenous retinal detachment, with ‘cells’ in the anterior chamber and elevated intraocular pressure, often in the evening.1 The detachment is typically caused by a dialysis at the ora serrata or a break in the non-pigmented epithelium of the pars plana or pars plicata of the ciliary body.23 The elevated intraocular pressure is usually discovered incidentally at the time of diagnosis of the retinal detachment, and resolves without specific treatment when the retina is reattached. We present a case in which the reverse was found. The patient presented with acute open angle glaucoma and the retinal detachment was found incidentally.