Intraocular pressure fluctuations in patients implanted with an implantable collamer lens (ICL V4c). Three-month follow-up

Abstract

Abstract Introduction Fluctuating elevated intraocular pressure (IOP) is one of the complications of an implanted collamer lens (ICL), and its alteration is a predictive factor for the development of glaucoma. Material and methods A prospective, cross-sectional analytic study was conducted on patients suitable for ICL implantation. Complete clinical and biometric work-ups were performed, as well as night-time IOP curve, in supine position, with 4 determinations, in order to assess fluctuation, considering abnormal with a value higher than 5 mmHg being considered abnormal. Three months after the patients underwent surgery, the work-ups were repeated, including a night-time IOP curve to assess any changes in IOP fluctuations. Results A total of 31 eyes of 16 patients were studied. Mean IOP fluctuation in the preoperative assessment was 3.35 ± 2 mmHg, whereas the postoperative mean was 3.0 ± 2.2 mmHg, with the difference not being statistically significant. Visual acuity and capacity, as well as spheric equivalent did show a statistically significant improvement. There were 6 cases of complications, which were related to a higher vault and a greater ICL size. There was no relationship between these findings and the angle grade, pigment, and the level of training of the surgeon. Conclusions The effect of an ICL on IOP fluctuations, has been studied for the first time, which was not statistically significant. As in previous publications, the procedure was safe and reproducible, adding the fact that the level of training of the surgeon is not a determining factor in these findings.