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The recent article of Yiu et al 1 aims to compare the functional and anatomical outcomes after idiopathic epiretinal membrane (ERM) surgery either ‘alone’ or when ‘combined’ with a cataract surgery. We feel that the design of this study is fundamentally flawed, however. In order to adequately compare these groups, the ‘alone’ group should remain phakic for the duration of the study. In this paper, the ‘alone’ group were already pseudophakic in 67.5% of cases (27/40) at recruitment, and a further 10% received surgery for lens opacification at a separate date. The authors have, therefore, compared single session combined surgery with sequential individual surgery (primary cataract surgery with late ERM peeling) in 77.5% of cases. Furthermore, all …
Contributors Both KNK and RR contributed to the writing of this paper.
Competing interests None.
Provenance and peer review Not commissioned; internally peer reviewed.