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. 2017 Sep 12;7(1):11302.
doi: 10.1038/s41598-017-11539-9.

Monovision by Implantation of Posterior Chamber Phakic Intraocular Lens with a Central Hole (Hole ICL) for Early Presbyopia

Kazutaka Kamiya  1 , Masahide Takahashi  2 , Natsumi Takahashi  2 , Nobuyuki Shoji  2 , Kimiya Shimizu  2
Affiliations

Monovision by Implantation of Posterior Chamber Phakic Intraocular Lens with a Central Hole (Hole ICL) for Early Presbyopia

Kazutaka Kamiya et al. Sci Rep. .

Abstract

This study was aimed to evaluate visual performance at near to far distances in early presbyopic patients undergoing monovision by implantation of an ICL with a central hole (hole ICL). This pilot study comprised thirty-four eyes of 17 early presbyopic patients (age, 40 to 53 years) who underwent hole ICL implantation, and whose targeted refraction was set at emmetropia for the dominant eye, and at slight myopia (-0.5 to -1.0 diopters (D)) for the non-dominant eye. Corrected distance visual acuity was significantly improved, from -0.11 ± 0.07 preoperatively to -0.19 ± 0.09 logMAR postoperatively (p < 0.001, Wilcoxon signed-rank test). Uncorrected distance visual acuity was also significantly improved from 1.43 ± 0.35 preoperatively to -0.04 ± 0.18 logMAR postoperatively (p < 0.001). The mean binocular visual acuity was 0.01 logMAR or better at all distances (5.0, 3.0, 2.0, 1.0, 0.7, 0.5, and 0.3 m). All eyes were within ± 0.5 D of the targeted correction. All patients had within the normal range of near stereopsis. Neither cataract formation, significant intraocular pressure rise, nor vision-threatening complications occurred. Monovision by hole ICL implantation provided good binocular vision at near to far distances, without developing cataract, suggesting its feasibility as a new surgical presbyopic approach for early presbyopia.

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Conflict of interest statement

Dr. Shimizu is a consultant of STAAR Surgical who has assisted with the development of patented technologies. The other authors have no competing interests as defined by Nature Publishing Group, or other interests that might be perceived to influence the results and/or discussion reported in this paper.

Figures

Figure 1
Figure 1
Changes in corrected distance visual acuity (CDVA) after hole implantable collamer lens (Hole ICL) implantation.
Figure 2
Figure 2
Cumulative percentages of eyes attaining specified cumulative levels of uncorrected distance visual acuity (UDVA) after hole implantable collamer lens (hole ICL) implantation.
Figure 3
Figure 3
Uncorrected visual acuity at near to far distances after hole implantable collamer lens (hole ICL) implantation.
Figure 4
Figure 4
A scatter plot of attempted vs. achieved correction (spherical equivalent) after hole implantable collamer lens (hole ICL) implantation.
Figure 5
Figure 5
Contrast sensitivity function after hole implantable collamer lens (hole ICL) implantation.
See this image and copyright information in PMC

References

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