Posterior chamber phakic intraocular lens for the correction of presbyopia in highly myopic patients

Abstract

Purpose: To report the initial experience with a new presbyopic phakic intraocular lens (pIOL) in the correction of high myopia and presbyopia. Setting: Gemini Eye Clinic, Zlin, Czech Republic. Design: Prospective cohort study. Methods: Presbyopic eyes with moderate to high myopia were implanted with a presbyopic posterior chamber pIOL (IPCL). The visual acuities at near and distance, endothelial cell density, and ocular condition were examined 1 week, 3 months, 1 year and 2 years postoperatively. Results: The mean uncorrected distance visual acuity improved significantly from 1.25 logarithm of the minimum angle of resolution (logMAR) (1.15 to 1.35 95% confidence interval [CI]) to 0.11 logMAR (95% CI, 0.03 to 0.17) (P < .0001). No eye lost 1 or more lines of corrected distance visual acuity. The mean distance refraction improved significantly from −6.9 diopters (D) (range −8.6 to −5.3 D) preoperatively to −0.35 D (range −0.55 to −0.15 D, P < .0001) with less than −0.5 D residual refraction in 11 of 17 eyes. Fifteen of 17 eyes had improved uncorrected near visual acuity to J1 (Jaeger chart) at the 2-year follow-up. The near addition at the 2-year follow-up decreased from preoperatively +1.26 D (range 0.19 to 2.34 D) to +0.39 D (range 0.18 to 0.60 D). The mean endothelial cell density was reduced from 2552 cells/mm2 (range 2421 to 2682 cells/mm2) to 2299 cells/mm2 (range 2108 to 2490 cells/mm2) after 2 years. All patients were subjectively satisfied with the outcomes. Conclusions: The new pIOL provided good visual outcomes in near and far distances in an initial case series of patients.

<p>Safety and Efficacy of a New Posterior Chamber Phakic Intraocular Lens in Cases of High Myopia: Early Results</p>

“…Recent studies of a novel phakic IOL (IPCL with peripheral holes) by Care Group Inc. achieved a visual acuity of 20/40 or better in 90% of eyes. 17 In our study, 100% of eyes achieved an unaided visual acuity of 20/40 or better, and 73% of eyes could achieve 20/20 or better. In addition, 10% of eyes had a vision of 20/16 or better.…”

“…[7][8][9][10][11][12] Some newer pIOLs models have emerged during the last few years, but there is no evidence regarding their long-term safety and efficacy with a follow-up time of 5 years or longer. [13][14][15][16][17] The current paper demonstrates 1-year visual outcomes of a newer type of phakic IOL (Refractive Intraocular Lens (RIL), Appasamy Associates Inc.) in eyes with moderate to high myopia. To the best of our knowledge, this is the first report of this model.…”

Atomic force microscopy comparative analysis of the surface roughness of two posterior chamber phakic intraocular lens models: ICL versus IPCL

“…In recent years, a new model of posterior chamber phakic IOL (iPCL) has been developed and is commercially available in some countries [15,17]. Regarding the comparison with the current "gold standard", the Visian ICL, differences in both the material and the design have been previously described, but to the best of our knowledge, there have been no comparative studies searching for differences in the anterior surface roughness between these two IOL models.…”

Diagnostic Techniques to Increase the Safety of Phakic Intraocular Lenses

“…The Implantable Phakic Contact Lens (IPCL; Care Group, Baroda, India) is made using reinforced hybrid acrylic material with medium water content, and its current version features two holes in the superior part of the optic, as well as a central hole in lenses with negative refractive powers and in plus power lenses of up to +3.5 D [34,36]. In addition to its ability to correct myopia, hyperopia, and astigmatism, a multifocal diffractive presbyopia-correcting version of this pIOL is available [36,37].…”