For a study, it was determined that when comparing eyes with tube shunts to eyes without filtering operations, digital ocular compressions (DOCs) reduced intraocular pressure by a significant amount and for a more extended period of time. Glaucoma surgeons frequently utilized DOCs to lower intraocular pressure (IOP) in the early postoperative period. The effects of DOC in eyes with tube shunts, on the other hand, were poorly understood. Researchers investigated these effects in eyes with functional glaucoma tube shunts that had been in place for a long time. Adults with primary open-angle glaucoma and an Ahmed tube shunt in just one eye were enrolled for the masked prospective trial. A single transpalpebral DOC was applied to each eye after collecting baseline IOP with Goldmann applanation tonometry (in random order). After 10, 20, 30, 60, 90, 120, 150, 180, 210, and 240 minutes, or until the measured IOP returned to baseline, post-compression IOP was assessed. The control eye was a fellow (nonsurgical) eye. Kaplan-Meier analysis was used to assess the magnitude and duration of IOP reduction. The pressure applied to each cohort’s eyes was standardized using a force-sensitive resistor, and the impulse was evaluated for differences. A total of 22 eyes from 11 patients were subjected to DOC. The applied impulse to the eyes did not change significantly amongst the cohorts (P=0.6). Tube shunt eyes had a mean initial IOP drop of 5.36 mm Hg than 2.55 in control eyes (P=0.014). The tube shunt group had a higher survival rate (P=0.049) based on the log-rank analysis. DOC was a successful approach for transiently lowering IOP in eyes with long-established patent tube shunts for about an hour. Compressions must be conducted regularly to maintain pressure reduction.

 

Link:journals.lww.com/glaucomajournal/Fulltext/2022/02000/Digital_Ocular_Compressions_Reduce_Intraocular.5.aspx