Editor,—The report on Descemet’s membrane detachment by Mulhern and coauthors1 requires comment. In a report last year, we detailed three cases of Descemet’s membrane (DM) detachment after intraocular surgery, one of which occurred after preparation of a phacoemulsification scleral pocket.2 The detachment involved the visual axis, was recognised intraoperatively, and an attempt at primary repair was made. After a successful secondary repair, final visual acuity attained was 6/6. We suggested that efforts should be made at the time of primary surgery to repair a recognised large DM detachment, and that an expanding gas such as SF6, with or without suture fixation, should be used. The management of the case reported by Mulhern and coauthors involved primary excision of a large fragment of detached DM. This action takes no account of the possibility that the detachment may …