Implantable collamer lens and femtosecond laser for myopia: comparison using an adaptive optics visual simulator

Pérez-Vives, Cari; Albarrán-Diego, César; García‐Lázaro, Santiago; Ferrer-Blasco, Teresa; Montés‐Micó, Robert

doi:10.5935/0004-2749.20140026

Cited by 3 publications

(3 citation statements)

References 21 publications

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“…Follow up period extended for one year and showed significant difference in Spherical error, cylindrical error and spherical equivalent. Spherical equivalent of ICL group mean value was (0.0000±0.433) and that of the Femtosecond assisted group (-1.12±0.748) with (p<0.004*) this data is consistent with Cari perez-vives et al [29]. The above mentioned changes of spherical equivalent of manifest refraction equal or more than (1.00D) in an interval of 6 months is known as stability.…”

Section: Discussionsupporting

confidence: 85%

Contrast Sensitivity and High Order Aberrations After Femtosecond Lasik and Implantable Collamer Lenses in Correction of High Myopia

Abdelmateen

Mostafa

Ammar

et al. 2019

Egyptian Journal of Clinical Ophthalmology

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Purpose: To compare visual quality (UCVA, BCVA, and contrast sensitivity) and optical quality (High order aberrations) of Femtosecond assisted LASIK and implantable collamer lens implantation in correction of high myopia. Methods: This study was non-randomized comparative prospective consecutive interventional study. It included 31 eyes with high myopia (≥ -6 Ds) of 21 patients attended to the outpatient ophthalmic clinic of Sohag university hospitals from the period from Jan.2016 to Jan.2017. The patients were divided into two groups depending on: Degree of myopia, corneal thickness and corneal tomography. Group A (14 eyes) of 12 patients were subjected to implantable collamer lenses implantation and Group B (17 eyes) of 9 patients were subjected to femtosecond assisted LASIK. Results: Postoperative data in both groups was, in Group A (ICL group) showed UCVA was (0.188±0.123) and UCVA of Group B (Femtosecond assisted LASIK) was (0.105±0.06) with (p-value <0.133). BCVA of Group one (ICL) was (0.171±0.114) and that of Group two was (0.105±0.04) with (p-value <0.174). Spherical error in Group A was (0.321± 0,590) and that of Group B (-0.75±0.31) postoperative with (p-value <0.001*). Cylindrical error was (-0.392±0.318) and Group two was (-0.750±0.204) with (p-value <0.00*). Spherical equivalent in Group A was (-0.00±0.433) and that of Group B was (-1.12±0.748) with (p-value <0.004*). Contrast sensitivity of Group A was (132.57±39.99) and that of Group B (102.857±23.688), with (p-value <0.075). There wasn't significant difference in RMS Group A (0.770±0.21) and that of Group B (1.15±0.53) with (p-value <0.22). There was significant difference in mean values of spherical aberrations of Group A (-0.13±0.9123), Group B (0.781±0.406) with (p-value <0.001*) , coma of Group A (0.131±0.0649), Group B (0.4600±0.2075) with (p-value <0.011*) and trefoil high order aberrations of Group A (-0.151±0.09), Group B (0.282±0.11) with (p-value <0.03* . Conclusion: Both implantable collamer lens and femtosecond assisted LASIK proved good visual quality regarding visual acuity and contrast sensitivity in photopic conditions. For optical quality both induced high order aberrations which were more in Femtosecond assisted group.

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Section: Discussionsupporting

confidence: 85%

Contrast Sensitivity and High Order Aberrations After Femtosecond Lasik and Implantable Collamer Lenses in Correction of High Myopia

Abdelmateen

Mostafa

Ammar

et al. 2019

Egyptian Journal of Clinical Ophthalmology

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“…The safety and efficacy indices were 1.19 ± 0.23 and 1.04 ± 0.27, there were no declines in BCDVA, and all the patients were satisfied with their vision, implying that ICL-V4c implantation is safe and efficient for high ametropia correction. Pérez-Vives C [35] and Ganesh S [36] investigated the differences in visual and refractive results between the ICL procedure and corneal refractive surgery. The outcomes demonstrated that the quality of vision and patient satisfaction is better with ICL than with femtosecond-LASIK.…”

Section: Discussionmentioning

confidence: 99%

One-year natural course of corneal densitometry in high myopic patients after implantation of an implantable collamer lens (model V4c)

Chen

Shen

et al. 2020

BMC Ophthalmol

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Background: Corneal densitometry, which is also known as corneal backscattering, is a surrogate measure of corneal clarity. The purpose of the study was to investigate the changes in corneal densitometry (CD) after implanting an implantable collamer lens (ICL-V4c). Method: Twenty-six high myopic patients (aged 29.3 ± 6.6 years, 6 males and 20 females) who underwent ICL-V4c implantation were enrolled. Intraocular pressure (IOP), corneal topography, corneal densitometry, uncorrected distance visual acuity (UCDVA), manifest refraction, and best corrected distance visual acuity (BCDVA) were evaluated preoperatively and at 1 day, 1 week, and 1, 3, 6, and 12 months post-operatively. Endothelial cell density (ECD) was measured pre-operatively and at 3, 6, and 12 months post-operatively. The efficacy index (mean post-operative UCDVA / mean pre-operative BCDVA) and the safety index (mean post-operative BCDVA / mean pre-operative BCDVA) were evaluated at 1 month, 3 months, 6 months and 12 months post-operatively. Results: Over the annular diameters of 0-2 mm, the pre-operative densitometry values of the anterior layer, central layer, posterior layer, and total layer were 20.1 ± 2.8, 11.8 ± 1.1, 10.5 ± 0.9 and 14.1 ± 1.5, respectively. From pre-operatively to post-operative Month 12, the values changed insignificantly (P = 0.177, P = 0.153, P = 0.543 and P = 0.207, respectively). Over the annular diameters of 2-6 mm, the pre-operative mean densitometry values were 17.9 ± 2.2, 10.5 ± 0.9, and 12.6 ± 1.2, respectively. From pre-operatively to post-operative Month 12, the values decreased to 16.5 ± 2.1, 10.0 ± 0.9, and 11.9 ± 1.2, respectively, which were similar to the pre-operative values (all P > 0.05) but significantly lower than the values obtained at post-operative Day 1 (P = 0.013, P = 0.002 and P = 0.010, respectively). The densitometry value of the posterior layer over the annular diameters of 2 to 6 mm remained unchanged (from 9.4 ± 0.7 to 9.1 ± 0.7) over time (P = 0.372). The efficacy and safety indices assessed at 12 months post-operatively were 1.04 ± 0.27 and 1.19 ± 0.23, respectively. The changes in IOP and ECD values were statistically insignificant (P = 0.896 and P = 0.968, respectively). Conclusion: ICL-V4c implantation may be safe and efficient for high ametropia correction. The corneal densitometry values obtained over the annulus of 0-6 mm increased slightly from before the operation to post-operative Day 1 and then decreased gradually, which indicates that ICL-V4c implantation may not compromise corneal clarity.

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“…Phakic intraocular lenses, including implantable collamer lenses (ICL) have brought a remarkable progress in the management of high and extreme myopia, as compared to keratorefractive surgeries, being less likely to produce HOA and provide better outcomes of visual quality defined by modular transfer function (MTF), point spread function (PSF), visual acuity, and contrast sensitivity [ 6 - 8 ]. Nevertheless, changes in wavefront aberrations after the operation are significant, adverse impacts being the most obvious on near vision [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Scharioth Macula Lens for patients with high myopia: a novel approach to achieve spectacle independence (binocular trifocal monovision)

Scharioth

Duran²,

Béres³

2023

rjo

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Implantable collamer lens and femtosecond laser for myopia: comparison using an adaptive optics visual simulator

Cited by 3 publications

References 21 publications

Contrast Sensitivity and High Order Aberrations After Femtosecond Lasik and Implantable Collamer Lenses in Correction of High Myopia

Contrast Sensitivity and High Order Aberrations After Femtosecond Lasik and Implantable Collamer Lenses in Correction of High Myopia

One-year natural course of corneal densitometry in high myopic patients after implantation of an implantable collamer lens (model V4c)

Scharioth Macula Lens for patients with high myopia: a novel approach to achieve spectacle independence (binocular trifocal monovision)

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