Abstract
Abstract Objective To study the behaviour of the biomechanical properties of the cornea in DMEK (Descemet membrane endothelial keratoplasty). Methods Prospective longitudinal observational study. 21 pre and post-DMEK eyes. 3-month follow-up with the dynamic Scheimpflug Analyzer (CorvisST). The following parameters were measured: PIOnc: non-contact intraocular pressure (IOP), PIOb: corrected by biomechanics, maximum deflection amplitude (DefA), CCT: central corneal pachymetry, flattening speed 1 and 2, peak distance, HC deformation amplitude: deformation amplitude in maximum concavity, integrated inverse concave radius, DAR 1 and 2: deformation amplitude at 1 mm and 2 mm from the corneal apex, respectively. ARTh: Ambrosial pachymetric ratio, SP1: stiffness parameter, IWC: Biomechanical index corvis and the maximum inverse radius. Pre-operative and post-operative measurements were performed with a 3-month follow-up and compared with a paired sample t-test. Results There was a significant decrease in the PIOnc of 1.54 ± 3 mmHg (p Conclusions Variables indicate a decrease in corneal strength post DMEK, with an increase in IOB, at least the first 3 months after surgery. This finding is especially relevant in the follow-up of patients with coexisting glaucoma.
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