Scherrer E, Bachmann LM, Job O, et al. - Given that the Ahmed and Baerveldt tubes are the most commonly used glaucoma drainage devices (GDD) for the treatment of refractory glaucoma, researchers used the Hess Screen Test to examine the occurrence and patterns of postoperative motility disorders overall and between the two GDD tubes. The sample consisted of 20 patients undergoing Ahmed and 20 patients undergoing Baerveldt tube implantation with a follow-up of at least 1 year. Ocular misalignment and motility restriction are common after GDD. Although diplopia is not caused by every motility disorder, it is common. As a result, it must be considered in informed consent.