2.3. Blinding and Randomization
EVENTS
The eligible participants were randomly assigned to treatment group ‘A’ (resection of skin only) or ‘B’ (resection of skin and a strip of underlying orbicularis oculi muscle) according to the list created prior to the start of the study by a randomization computer tool (Sealed Envelope Ltd., 2017, London, UK). The participants received a unique code in consecutive order, i.e., the first included participant received the first code on the list. The investigators and participants were blinded in that the latter were informed about both surgical procedures, but did not know which treatment they had undergone, and received identical information about the possible postoperative course of events. Only the surgeons knew which was treatment ‘A’ or ‘B’ until the completion of the trial.