Implantation of posterior chamber phakic intraocular lens for myopia and hyperopia – long-term clinical outcomes

Kočová, Hana; Vlková, Eva; Michalcová, Lenka; Motyka, Oldřich

doi:10.1016/j.jfo.2016.10.009

Cited by 21 publications

(11 citation statements)

References 18 publications

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“…Guber et al ( 2 ) reported that the rate of lens opacity development was 54.8% at 10 years postoperatively, owing to the broader view under full dilation and detection of peripheral lens opacity, but there was no significant increase in IOP observed during the 10-year follow-up. Kocová et al ( 3 ) showed that the mean decimal UDVA and CDVA were 1.0 ± 0.37 and 1.18 ± 0.38 in myopic eyes, respectively, and 12.5% of myopic eyes developed cataracts, which significantly affected visual acuity. Nakamura et al ( 4 ) demonstrated that logMAR UDVA and CDVA were −0.01 ± 0.24 and −0.18 ± 0.07 and that 71.4 and 87.1% of eyes were within 0.5 and 1.0 D, respectively, at 10 years postoperatively.…”

Section: Discussionmentioning

confidence: 99%

Eight-Year Outcomes of Implantation of Posterior Chamber Phakic Intraocular Lens With a Central Port for Moderate to High Ametropia

et al. 2021

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Purpose: To assess the 8-year clinical outcomes of implantation of an implantable collamer lens (ICL) with a central port (KS-Aquaport; EVO-ICL) for moderate to high myopia and myopic astigmatism.Methods: This retrospective study comprised a total of 177 eyes of 106 patients with spherical equivalents of −7.99 ± 3.33 D [mean ± standard deviation], who underwent EVO-ICL implantation. We evaluated the safety, efficacy, predictability, stability, and adverse events of the surgery, at 1 month, and 1, 2, 4, 6, and 8 years postoperatively.Results: The logarithm of the minimal angle of resolution (LogMAR) uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) were −0.07 ± 0.17 and −0.20 ± 0.09, respectively, at 8 years postoperatively. The safety and efficacy indices were 1.18 ± 0.24 and 0.89 ± 0.28, respectively. At 8 years, 83 and 93% eyes were within ± 0.5 D and ± 1.0 D of the targeted correction, respectively. Change in manifest refraction from 1 month to 8 years postoperatively was −0.13 ± 0.30 D. Three eyes (1.7%) that developed cataracts had a slight pre-existing peripheral anterior subcapsular cataract formation required simultaneous ICL extraction and cataract surgery at 2 or 3 years or ICL size change (1 size up) at 7 years postoperatively. We found that neither significant intraocular pressure (IOP) rise (including pupillary block) nor significant endothelial cell loss occurred in any case throughout the 8-year observation period.Conclusions: Current ICL implantation with central port technology offered good continuous outcomes for all measures of safety, efficacy, predictability, and stability for correcting moderate to high myopic errors over a long period, thereby suggesting its long-term viability as a surgical approach for the treatment of such eyes.

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Section: Discussionmentioning

confidence: 99%

Eight-Year Outcomes of Implantation of Posterior Chamber Phakic Intraocular Lens With a Central Port for Moderate to High Ametropia

et al. 2021

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“…Considering that a myopic shift due to nuclear sclerosis of the crystalline lens or elongation of the axial length can occur in high myopic eyes, it may result in a worsening distance visual acuity. Although it is unlikely that the refractive and visual outcomes were markedly changed in the late postoperative period, since it is known that this surgical technique provided stable refractive outcomes in previous studies [ 1 – 6 ], more prolonged and careful observation is still necessary to elucidate the long-term refractive outcomes in such eyes. Secondly, the sample data were kept rather limited to make it possible to detect rare complications such as cataract formation in this study population.…”

Section: Discussionmentioning

confidence: 99%

“…The Visian Implantable Collamer Lens (ICL), a posterior chamber phakic intraocular lens, has been demonstrated to offer effective correction of moderate to high ametropia over a long period of time [ 1 – 6 ]. However, this surgery necessitates preoperative laser iridotomies or intraoperative peripheral iridectomy to prevent the occurrence of pupillary block at all times.…”

Section: Introductionmentioning

confidence: 99%

Intentional Undercorrection by Implantation of Posterior Chamber Phakic Intraocular Lens With A Central Hole (Hole ICL) For Early Presbyopia

Takahashi

Kamiya

Shoji

et al. 2018

BioMed Research International

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Purpose To assess visual performance at near to far distances in early presbyopic patients with undercorrection by implantation of an ICL with a central hole (hole ICL). Methods This prospective study evaluated forty-two eyes of 21 early presbyopic patients (age, 40 to 53 years) with spherical equivalents of -7.37 ± 3.18 D [mean ± standard deviation] who underwent hole ICL implantation and whose targeted refraction was set at slight myopia (-0.61 ± 0.28 D) for both eyes. We assessed the safety, efficacy at near to far distances, predictability, and adverse events of the surgery, during the 6-month observation period. Results Corrected distance visual acuity did not improve significantly, from -0.17 ± 0.07 preoperatively to -0.19 ± 0.08 logMAR postoperatively (p=0.066, Wilcoxon signed-rank test). Uncorrected distance visual acuity was significantly improved from 1.30 ± 0.24 preoperatively to -0.03 ± 0.20 logMAR postoperatively (p<0.001). The mean binocular visual acuity was 0.02 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. Neither cataract formation, significant intraocular pressure rise, nor other vision-threatening complications occurred in any case during the 6-month observation period. Conclusions Our pilot study showed that intentional undercorrection by hole ICL implantation for early presbyopia was safe with predictable refractive results and provided good binocular vision at near to far distances, without developing cataract, suggesting its viability as a surgical presbyopic treatment for such patients.

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“…Implantable collamer lens (ICL) implantation was another promising way for high myopia correction [ 9 ], the postoperative spherical equivalent error (SER) was reported to be predictable [ 10 , 11 ] and stable [ 12 , 13 ]. ICL implantation broadened the scope of target population, such as patients with thin cornea [ 14 ] and even keratoconus [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Implantable collamer lens versus small incision lenticule extraction for high myopia correction: A systematic review and meta-analysis

et al. 2021

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Purpose To compare the efficacy, safety, predictability and visual quality between implantable collamer lens (ICL) implantation and small incision lenticule extraction (SMILE) for high myopia correction in adults. Methods A systematic review and meta-analysis was conducted. A comprehensive literature search was done based on databases including PubMed, Science Direct, Embase, and the Cochrane Central Register of Controlled Trials. The efficacy index, safety index, changes in Snellen lines of corrected distance visual acuity (CDVA), predictability (difference between post-operative and attempted spherical equivalent error, SER), incidence of halos, and change in higher-order aberrations (HOAs) were compared. Mean difference (MD) and 95% confidence interval (CI) was used to estimate continuous outcomes, risk ratio (RR) and 95%CI was used to estimate categorical outcomes. Results Five observational studies involving 555 eyes were included in this review. Studies’ sample sizes (eyes) ranged from 76 to 197. Subjects’ refraction ranged from -6 diopter (D) to -12D. Study duration of most researches were 6 months or 12 months. Compared to SMILE, ICL implantation showed better efficacy index (MD=0.09, 95%CI:0.01 to 0.16) and better safety index (MD=0.08, 95%CI: 0.00 to 0.16). Compared with SMILE, more ICL-treated eyes gained one or more Snellen lines of CDVA (RR=1.54, 95%CI:1.28 to 1.86), more gained two or more lines (RR=2.09, 95%CI:1.40 to 3.13), less lost one or more lines (RR=0.17, 95%CI:0.05 to 0.63). There was no difference in predictability between two treatments, RRs of predictability of within ±0.5D and ±1D were 1.13 (95%CI: 0.94 to 1.36) and 1.00 (95%CI: 0.98 to 1.02). Compared with SMILE, ICL implantation came with a higher risk of halos [RR=1.79, 95%CI: 1.48 to 2.16] and less increase in total HOAs (MD=-0.23, 95%CI: -0.42 to -0.03). Conclusion Compared with SMILE, ICL implantation showed a higher risk of halos, but equal performance on SER control, and better performance on efficacy index, safety index, CDVA improvement and HOAs control. Overall, ICL implantation might be a better choice for high myopia correction in adults.

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Implantation of posterior chamber phakic intraocular lens for myopia and hyperopia – long-term clinical outcomes

Cited by 21 publications

References 18 publications

Eight-Year Outcomes of Implantation of Posterior Chamber Phakic Intraocular Lens With a Central Port for Moderate to High Ametropia

Eight-Year Outcomes of Implantation of Posterior Chamber Phakic Intraocular Lens With a Central Port for Moderate to High Ametropia

Intentional Undercorrection by Implantation of Posterior Chamber Phakic Intraocular Lens With A Central Hole (Hole ICL) For Early Presbyopia

Implantable collamer lens versus small incision lenticule extraction for high myopia correction: A systematic review and meta-analysis

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