Comparison of postoperative optical quality according to the degree of decentering of V4c implantable collamer lens

Park, Min Ji; Jeon, Hye Min; Lee, Kyoung Heon; Han, Sang Youp

doi:10.18240/ijo.2017.04.19

Cited by 6 publications

(7 citation statements)

References 20 publications

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“…Pérez-Vives [ 18 , 19 ] reported the results of an ICL decentration simulation test in vitro, and found that coma was directly correlated with the decentration value of the ICL and increased more with pupil diameter and higher refractive degree. Our study showed that tilt and decentration had no significant effect on postoperative aberrations, and had no significant correlation with postoperative UDVA and CDVA after adjusting for age, eye, preoperative refraction, and preoperative scotopic pupil, which is consistent with the results of Park [ 27 ]. Additionally, the effect of ICL decentration and tilt on postoperative visual acuity would be clinically insignificant.…”

Section: Discussionsupporting

confidence: 91%

“…Compared with these values, our findings are relatively lower; this discrepancy may be attributed to the location of the ICL haptics on the ciliary sulcus, which allows more stability and less influence from the suspensory ligament and other structures [ 26 ]. A study of ICL that used the pupil center as the reference, reported that decentration of 48.9% and 93.6% of eyes were within 0.36 mm and 0.72 mm after ICL implantation, respectively [ 27 ]. Notably, the selection criteria of the reference axis remain ununified.…”

Section: Discussionmentioning

confidence: 99%

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Effects of tilt and decentration of Visian Implantable Collamer Lens (ICL V4c) on visual quality: an observational study

et al. 2022

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Background The central hole of the Visian Implantable Collamer Lens (ICL V4c) provides a reference to observe its tilt or decentration. This study aimed to investigate the tilt and decentration effects of ICL V4c on visual quality after implantation. Methods A total of 135 eyes from 69 patients who underwent ICL V4c implantation were included in this study. Evaluation of uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), and aberrations were performed 6-months postoperatively. The anterior segment parameters were collected using CASIA2 anterior segment-optical coherence tomography, tilt and decentration of ICL V4c were analyzed using MATLAB software. All patients received questionnaires to investigate the visual quality postoperatively. Results The safety and effectiveness were 1.18 ± 0.17 and 1.11 ± 0.18, respectively. No significant changes were observed regarding higher-order and spherical aberrations after the operation; however, coma and trefoil significantly increased compared to preoperative values. The average total decentration and tilt was 0.21 ± 0.12 mm and 2.54 ± 1.00°, respectively. Horizontal, vertical, and total values of tilt and decentration were not significantly associated with postoperative CDVA, UDVA, and aberrations. The most common visual symptom was halo, and 97.04% of patients had a satisfaction score ≥ 8. The total or horizontal tilt was significantly positively correlated with the frequency, severity, and bothersome scores from the questionnaires. Conclusions ICL V4c implantation can obtain high visual quality and patient satisfaction. Although the degree of tilt and decentration after ICL V4c implantation was small, a positive effect on subjective visual quality was observed.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Effects of tilt and decentration of Visian Implantable Collamer Lens (ICL V4c) on visual quality: an observational study

et al. 2022

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“…Park et al [ 13 ] used the KR-1 W aberrometer to measure the optical quality of eyes implanted with the V4c and the non-hole model at different degrees of decentering. Table 2 shows data on centered lenses for a 4.0-mm pupil in 46 eyes with a mean preoperative SE of − 8.58 ± 2.08 D. Mean HOAs value was similar to that found by Shimizu et al [ 8 ].…”

Section: Discussionmentioning

confidence: 99%

“…Park et al [ 13 ] measured 46 eyes (centered lenses with a mean SE of − 8.58 ± 2.08 D) with the same instrument at the same follow-up, reporting similar outcomes: 33.42 ± 9.20 cpd and 0.19 ± 0.06. They compared these values with those found in 49 eyes implanted with the non-hole ICL and showed that they were not significantly different between both groups.…”

Section: Discussionmentioning

confidence: 99%

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In vivo optical quality of posterior-chamber phakic implantable collamer lenses with a central port

et al. 2021

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Background The aim of this review is to summarize the optical quality results in patients following the implantation of the V4c implantable collamer lens with a central port (ICL, STAAR Surgical Inc.). Main text A literature search in several databases was carried out to identify those publications, both prospective, retrospective and/or comparative with other refractive surgery procedures, reporting optical outcomes of patients who were implanted with the V4c ICL model. A total of 17 clinical studies published between 2012 and 2021 were included in this review. A detailed analysis of the available data was performed including number of eyes, follow-up and preoperative spherical equivalent. Specifically, the review focused on several optical parameters including higher-order aberrations (HOAs), modulation transfer function (MTF) cut-off frequency and Strehl ratio. This review encompassed a total of 817 eyes measured using different optical devices based on Hartmann-Shack, retinal image quality measurement and ray-tracing technologies at different follow-ups. Conclusions The outcomes found in this review lead us to conclude that the ICL V4c model provides good optical quality, by means of different metrics, when implanted.

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EVO/EVO+ Visian Implantable Collamer Lenses for the correction of myopia and myopia with astigmatism

Martínez-Plaza

Rosa

López-Miguel

et al. 2023

Expert Review of Medical Devices

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Comparison of postoperative optical quality according to the degree of decentering of V4c implantable collamer lens

Abstract: Our results suggest that Hole ICL implantation provides satisfactory visual quality that is equivalent to that provided by conventional ICL, regardless of the presence of central hole and degree of decentering.

Cited by 6 publications

References 20 publications

Effects of tilt and decentration of Visian Implantable Collamer Lens (ICL V4c) on visual quality: an observational study

Effects of tilt and decentration of Visian Implantable Collamer Lens (ICL V4c) on visual quality: an observational study

In vivo optical quality of posterior-chamber phakic implantable collamer lenses with a central port

EVO/EVO+ Visian Implantable Collamer Lenses for the correction of myopia and myopia with astigmatism

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