Delta Journal of Ophthalmology (Jan 2021)
Visual and safety outcomes of a new implantable phakic contact lens in patients with a high degree of myopia
Abstract
Purpose The aim of this study was to assess the safety profile and efficacy of a new implantable phakic contact lens (IPCL V2.0) in patients with a high degree of myopia. Patients and methods This is a prospective study that was carried out to evaluate the surgical outcome of IPCL V2 implantation in 46 eyes of 32 patients with a high degree of myopia. The refractive results, visual acuity (LogMar values), endothelial cell count of the cornea and intraocular pressure were evaluated at baseline and at 1, 6, and 12 months postsurgery. Any complications either during or after surgery were assessed. Results A significant improvement in the uncorrected distance visual acuity was achieved. It improved from 1.2±0.21 at baseline to 0.36±0.20 at 12 months postoperatively (P=0.002). The index of efficacy [uncorrected distance visual acuity at 12 months postoperatively/corrected distance visual acuity (CDVA) at baseline) was 1.1 and the safety index (CDVA at 12 months/CDVA at baseline] was 1.5. The mean spherical equivalent at baseline was −13.8±4.1 diopters (D) and improved to −0.6±0.7 D at 12 months postoperatively (P<0.003). The average endothelial cell count was 2479±173 cells/mm2 preoperatively and decreased to 2399±156 cells/mm2 at 12 months postoperatively, which was a statistically insignificant change (P=0.14). The mean preoperative intraocular pressure was 14.7±2.6 mmHg and mmHg at 12 months postoperatively, it was 14.9±2.5 mmHg, a statistically nonsignificant change (P=0.14). No cases of cataract were noticed during the follow-up period. Conclusion The IPCL V2.0 implantation to correct high myopia showed a stable visual outcome and safety profile. Moreover, it provided a more economical alternative to correct high myopia. Long-term studies are required to further assess the efficacy and outcome of this lens.
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