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Ortega-Usobiaga J, González-López F, Peng Y, Bilbao-Calabuig R, Beltrán-Sanz J, Larrubia JR, Llovet-Osuna F. Visual outcomes of combined use of implantable collamer lens implantation and laser corneal visual correction for myopia over -18.00 diopters. J Cataract Refract Surg 2024; 50:733-738. [PMID: 38446490 DOI: 10.1097/j.jcrs.0000000000001438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 02/24/2024] [Indexed: 03/07/2024]
Abstract
PURPOSE To explore visual outcomes in patients with extreme myopia receiving an implantable collamer lens (ICL) at -18.00 diopters (D), with central port, followed by bioptics by laser vision correction (laser in situ keratomileusis [LASIK] or photorefractive keratectomy [PRK]) to address residual myopia or myopic astigmatism. SETTING Clínica Baviera (Aier Eye Hospital Group), Bilbao, Spain. DESIGN Retrospective analysis of cases. METHODS The study assessed uncorrected distance visual acuity, corrected distance visual acuity (CDVA), predictability, safety, efficacy, and patient satisfaction after implantation of the ICL and bioptics. The model implanted was V4c and EVO, with a correction of -18.00 D. Bioptics were performed at least 3 months after implantation, and patients were followed up for at least 3 months after LASIK or PRK. RESULTS The analysis included 125 eyes from 90 patients. Of these, 51.2% underwent LASIK and 48.8% PRK. Mean time from implantation to bioptics was 5.9 ± 9.4 months. Patients were followed up for a mean of 40.2 ± 37.9 months after bioptics. Median manifest refractive spherical equivalent was -2.89 D before bioptics and -0.49 D after. Median CDVA was 0.18 logMAR before bioptics and 0.17 after. The mean safety and efficacy indices were 2.22 ± 1.88 and 2.06 ± 1.85, respectively. CONCLUSIONS Visual outcomes and safety indices after ICL implantation and subsequent LASIK or PRK in patients with extreme myopia are excellent.
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Affiliation(s)
- Julio Ortega-Usobiaga
- From the Department of Cataract and Refractive Surgery, Clínica Baviera (Aier Eye Hospital Group), Bilbao, Spain (Ortega-Usobiaga); Department of Cataract and Refractive Surgery, Miranza IOA, Madrid, Spain (González-López); Department of Ophthalmology, Chongqing Aier-Mega Eye Hospital (Aier Eye Hospital Group), Chongqing, China (Peng); Department of Cataract and Refractive Surgery, Clínica Baviera (Aier Eye Hospital Group), Madrid, Spain (Bilbao-Calabuig, Llovet-Osuna); Department of Research and Development, Clínica Baviera (Aier Eye Hospital Group), Valencia, Spain (Beltrán-Sanz); Health Sciences Research Unit, Guadalajara University Hospital, University of Alcalá, Alcalá de Henares, Spain (Larrubia)
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Delgado-Tirado S, López-Miguel A, Báez-Peralta Y, González-Buendía L, Fernández I, Alió JL, Maldonado MJ, Coco-Martín RM. Monochromatic higher order aberrations in highly myopic eyes with Staphyloma. BMC Ophthalmol 2021; 21:223. [PMID: 34006229 PMCID: PMC8130529 DOI: 10.1186/s12886-021-01965-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 04/14/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Prevalence of high myopia is continuously increasing, thus, patients affected with staphyloma are abundant worldwide. Assessment of the quality of vision in these patients is mandatory for a proper clinical counselling, specially when undergoing surgical procedures that require intraocular lenses implantation. Thus, the purpose of the study was to assess monochromatic higher order aberrations (HOAs) in highly myopic eyes with staphyloma with or without a dome-shaped macula. METHODS Participants underwent spectral-domain optical coherence tomography, ocular axial biometry, dual Scheimpflug photography and integrated Placido disk topography, and Hartmann-Shack wavefront analysis. Five groups were evaluated: a low-moderate myopia control group (< 6.00 diopters, n = 31) and four high myopia (≥6.00 diopters) groups: eyes without staphyloma (n = 18), eyes with inferior staphyloma (n = 14), eyes with posterior staphyloma without dome-shaped macula (n = 15) and eyes with posterior staphyloma with dome-shaped macula (n = 17). Subsequently, two new groups (including all participants) were created to assess differences between myopia with and without staphyloma. One-way analysis of covariance was performed using age and lens densitometry as covariates. RESULTS Statistically significant (p ≤ 0.05) differences in anterior corneal fourth-order HOAs were observed between the low-moderate myopia and no-dome-shaped macula (Mean: 0.16 μm) and dome-shaped macula posterior staphyloma groups (Mean: 0.12 μm) in younger patients (≤45 years old). The same groups also showed (p ≤ 0.05) significant differences for anterior corneal primary spherical aberration (Mean: 0.19 and 0.13 μm, respectively). In addition, anterior corneal tetrafoil was significantly higher (p = 0.04) in dome-shaped macula compared to no-dome-shaped macula (Mean: 0.18 vs 0.06 μm, respectively). When all participants were grouped together, significantly lower mean anterior corneal primary spherical aberration (0.15 μm vs. 0.27 μm, p = 0.004) and higher internal primary spherical aberration (0.04 μm vs. -0.06 μm, p = 0.04) was observed in staphyloma compared to no-staphyloma myopic patients. CONCLUSIONS Eyes with high myopia and staphyloma have less positive anterior corneal primary spherical aberration and less negative internal primary spherical aberration, suggesting that the anterior corneal surface tends to mimic in a specular fashion the posterior pole profile. This corneal behaviour appears to change in patients older than 45 years.
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Affiliation(s)
| | - Alberto López-Miguel
- Instituto de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain.,Networks for Cooperative Research in Health (Oftared), Instituto de Salud Carlos III, Madrid, Spain
| | - Yazmin Báez-Peralta
- Instituto de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain
| | - Lucía González-Buendía
- Instituto de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain
| | - Itziar Fernández
- Instituto de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain
| | - Jorge L Alió
- Networks for Cooperative Research in Health (Oftared), Instituto de Salud Carlos III, Madrid, Spain.,Division of Ophthalmology, School of Medicine, Universidad Miguel Hernández, Alicante, Spain
| | - Miguel J Maldonado
- Instituto de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain. .,Networks for Cooperative Research in Health (Oftared), Instituto de Salud Carlos III, Madrid, Spain.
| | - Rosa M Coco-Martín
- Instituto de Oftalmobiología Aplicada (IOBA), Universidad de Valladolid, Valladolid, Spain.,Networks for Cooperative Research in Health (Oftared), Instituto de Salud Carlos III, Madrid, Spain
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Jiang Z, Wang H, Luo DQ, Chen J. Optical and visual quality comparison of implantable collamer lens and femtosecond laser assisted laser in situ keratomileusis for high myopia correction. Int J Ophthalmol 2021; 14:737-743. [PMID: 34012890 DOI: 10.18240/ijo.2021.05.15] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 01/29/2021] [Indexed: 11/23/2022] Open
Abstract
AIM To compare clinical outcomes and refractive stability of implantable collamer lens (ICL) implantation and femtosecond laser assisted laser in situ keratomileusis (FS-LASIK) for high myopia correction. METHODS The Optical Quality Analysis System (OQAS) was used to evaluate clinical outcomes objectively after operation for high myopia correction. We compared the two procedures in terms of 1-year changes in uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), safety index, efficacy index, spherical equivalent, modulation transfer function (MTF) cutoff frequency, strehl ratio (SR) and objective scatter index (OSI). RESULTS At 1y postoperatively, the safety indices were 1.33±0.27 in ICL group, and 1.17±0.24 in FS-LASIK group. 39.58% in the ICL group and 27.59% in the FS-LASIK group gained CDVA in 2 lines or better than that in preoperative CDVA. The efficacy indices were 1.28±0.22 in ICL group, and 1.13±0.26 in FS-LASIK group. The changes of spherical equivalent from 1wk to 1y postoperatively was -0.12±0.37 D in ICL group, and -0.79±0.58 D in FS-LASIK group (P<0.05). Spherical equivalent within ±0.50 D was achieved in 97.92% in ICL group and 68.97% in FS-LASIK group. MTF cutoff frequency were higher with ICL as compared to FS-LASIK (P<0.05) at each postoperative follow-up stage; for postoperative 1mo later, SR was statistically significant difference between two groups (P<0.05); with no statistically significant difference in OSI between two groups (P>0.05) in postoperative 3mo later. CONCLUSION ICL implantation and FS-LASIK procedures both provide good safety and predictability in high myopia correction. ICL implantation provides better clinical outcomes and refractive stability than FS-LASIK.
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Affiliation(s)
- Zheng Jiang
- Medical College, Hunan Normal University, Changsha 410006, Hunan Province, China
| | - Hua Wang
- Center for Ophthalmic Optics, Hunan Provincial People's Hospital; the First Affiliated Hospital of Hunan Normal University, Changsha 410005, Hunan Province, China
| | - Dong-Qiang Luo
- Center for Ophthalmic Optics, Hunan Provincial People's Hospital; the First Affiliated Hospital of Hunan Normal University, Changsha 410005, Hunan Province, China
| | - Jiao Chen
- Center for Ophthalmic Optics, Hunan Provincial People's Hospital; the First Affiliated Hospital of Hunan Normal University, Changsha 410005, Hunan Province, China
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Kayhan B, Coskunseven E, Sahin O, Pallikaris I. The effects of implantable collamer lens implantation on higher order aberrations. Int J Ophthalmol 2019; 12:1848-1852. [PMID: 31850167 DOI: 10.18240/ijo.2019.12.05] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 04/30/2019] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the changes in higher order aberrations (HOAs) after implantable collamer lens (ICL; Staar Surgical, Nidau, Switzerland) implantation. METHODS Totally 30 eyes of 18 patients with myopia were included in this study with an average age of 25.77y (min: 21, max: 40). Refraction, uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), HOAs (entire, corneal and internal) were evaluated preoperatively and three months postoperatively. Ocular aberrations were measured by using iTrace (Tracey Technology, Houston, Texas, USA). SPSS (IBM Corp. Released 2013. IBM SPSS Statistics for Windows, Version 22.0. Armonk, NY: IBM Corp) was used for the statistical analysis and the interpretation of the data. P values of less than 0.05 were considered statistically significant. RESULTS The preoperative mean spherical power was -9.01 D (min: -5.00, max: -13.00) and the mean cylindrical error was -2.40 D (min: -0.50, max: -4.75). The postoperative mean residual spherical power was -0.73 D (min: -0.20, max: -1.75) and the mean cylindrical error was -0.89 D (min: -0.18, max: -2.09). Analyses were made on root mean square (RMS) values of total HOAs (tHOAs), spherical aberration, coma and trefoil as entire, corneal and internal components. The differences in entire tHOAs and in internal tHOAs were significant. There was no significant change found in spherical aberrations. The differences in entire coma and in internal coma were significant. There was no significant change found in corneal coma. With respect to trefoil, the only significant difference was in internal trefoil. CONCLUSION The ICL implantation corrects the refractive error successfully and changes entire and internal HOAs of the eye.
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Affiliation(s)
- Belma Kayhan
- Dunyagoz Hospital Group, Istanbul 34337, Turkey.,Department of Ophthalmology, Sultan Abdulhamid Han Training and Research Hospital, the University of Saglik Bilimleri, Istanbul 34668, Turkey
| | | | - Onurcan Sahin
- Dunyagoz Hospital Group, Istanbul 34337, Turkey.,Institute of Vision and Optics, University of Crete, Heraklion 70013, Greece
| | - Ioannis Pallikaris
- Dunyagoz Hospital Group, Istanbul 34337, Turkey.,Institute of Vision and Optics, University of Crete, Heraklion 70013, Greece
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Chen X, Guo L, Han T, Wu L, Wang X, Zhou X. Contralateral eye comparison of the long-term visual quality and stability between implantable collamer lens and laser refractive surgery for myopia. Acta Ophthalmol 2019; 97:e471-e478. [PMID: 30187653 PMCID: PMC6585688 DOI: 10.1111/aos.13846] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 05/14/2018] [Indexed: 11/29/2022]
Abstract
Purpose To investigate the long‐term visual quality and stability of implantable collamer lens (ICL) and laser refractive surgery (LRS) for myopia. Methods This study comprised 52 eyes of 26 high‐myopia anisometropia patients who were suitable for surgical treatment. In each patient, the higher‐myopia eye was implanted with ICL and the lower‐myopia eye was treated with LRS. The patients were followed for 3 years. During that time period, uncorrected (UDVA) and corrected distance visual acuity (CDVA), refraction, wavefront aberration and visual quality were evaluated. Results The spherical equivalent refractive error changed from −14.11 ± 3.39 D preoperatively to −1.27 ± 1.05 D 3 years after ICL implantation and from −8.75 ± 2.76 D to −1.12 ± 1.30 D after LRS. The changes in refractive error from 1 month to 3 years were −0.52 and −0.77 D for the ICL and LRS groups, respectively. The safety indices (postoperative CDVA/preoperative CDVA) were 1.84 ± 1.00 and 1.32 ± 0.40, and the efficacy indices (postoperative UDVA/preoperative CDVA) were 1.40 ± 1.10 and 1.11 ± 0.44, respectively. The postoperative coma, spherical and total higher‐order aberrations in the ICL group were lower than those in the LRS group. Conclusion Both ICL implantation and LRS are safe and effective procedures for myopia with suitable indications, but ICL implantation is more stable. Fewer induced aberrations are gained after ICL implantation.
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Affiliation(s)
- Xun Chen
- Department of Ophthalmology Eye and ENT Hospital of Fudan University Shanghai China
- Department of Ophthalmology NHC Key Laboratory of Myopia Fudan University Shanghai China
| | - Lin Guo
- Department of Ophthalmology Xi'an No. 4 Hospital of Xi'an Jiao Tong University Xi'an China
| | - Tian Han
- Department of Ophthalmology Eye and ENT Hospital of Fudan University Shanghai China
- Department of Ophthalmology NHC Key Laboratory of Myopia Fudan University Shanghai China
| | - Liangcheng Wu
- Department of Ophthalmology Jing'an District Centre Hospital of Fudan University Shanghai China
| | - Xiaoying Wang
- Department of Ophthalmology Eye and ENT Hospital of Fudan University Shanghai China
- Department of Ophthalmology NHC Key Laboratory of Myopia Fudan University Shanghai China
| | - Xingtao Zhou
- Department of Ophthalmology Eye and ENT Hospital of Fudan University Shanghai China
- Department of Ophthalmology NHC Key Laboratory of Myopia Fudan University Shanghai China
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Ferrer-Blasco T, Domínguez-Vicent A, García-Lázaro S, Díez-Ajenjo MA, Alfonso JF, Esteve-Taboada JJ. Repeatability of in-vitro optical quality measurements of intraocular lenses with a deflectometry technique effect of the toricity. Int J Ophthalmol 2018; 11:1139-1144. [PMID: 30046530 DOI: 10.18240/ijo.2018.07.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the repeatability of an optical device for measuring the Zernike coefficients of toric intraocular lenses (IOLs) and assess whether its toricity has any impact in its repeatability. METHODS An experienced technician used the NIMO TR1504 to measure the Zernike coefficients 30 times for an aperture of 4.50 mm for all lenses included. The IOLs included were divided into two group: toric and non-toric ones. The cylindrical powers of the toric lenses included in the present study were 1.00, 1.50, 2.25, 3.00 and 3.75 D. Finally, the repeatability of the NIMO TR1504 was described in terms of within subject standard deviation (Sw) and repeatability limit. RESULTS The Sw was smaller than 0.011 µm for both lens groups and all Zernike coefficients, and the difference between both groups was smaller than 0.004 µm for all Zernike coefficients. Regarding the repeatability limit, this value was smaller than 0.025 µm for the toric lens group, and smaller than 0.031 µm for the non-toric lens one for all Zernike coefficients. Furthermore, the maximum difference between both lens groups was 0.010 µm. CONCLUSION The repeatability of the NIMO TR1504 to measure the optical quality is high and independent of the lens toricity. These results reflect that this system is robust and could be used to measure the in-vitro optical quality of either toric or non-toric IOLs.
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Affiliation(s)
- Teresa Ferrer-Blasco
- Department of Optics and Optometry and Visual Science, University of Valencia, Valencia 46100, Spain
| | - Alberto Domínguez-Vicent
- Department of Optics and Optometry and Visual Science, University of Valencia, Valencia 46100, Spain
| | - Santiago García-Lázaro
- Department of Optics and Optometry and Visual Science, University of Valencia, Valencia 46100, Spain
| | - María Amparo Díez-Ajenjo
- Department of Optics and Optometry and Visual Science, University of Valencia, Valencia 46100, Spain.,Clínica Optométrica, Fundació Lluís Alcanyís Universitat de València, Valencia 46020, Spain
| | - José F Alfonso
- Surgery Department, Fernández-Vega Ophthalmological Institute, Oviedo 33012, Spain.,School of Medicine, University of Oviedo, Oviedo 33006, Spain
| | - José J Esteve-Taboada
- Department of Optics and Optometry and Visual Science, University of Valencia, Valencia 46100, Spain
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Simulated prototype of posterior chamber phakic intraocular lens for presbyopia correction. J Cataract Refract Surg 2015; 41:2266-73. [PMID: 26703304 DOI: 10.1016/j.jcrs.2015.10.050] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 02/18/2015] [Accepted: 02/23/2015] [Indexed: 11/20/2022]
Abstract
PURPOSE To evaluate the visual impact of adding different spherical aberration values to an Implantable Collamer Lens phakic intraocular lens (pIOL) to increase the depth of focus using an adaptive optics visual simulator. SETTING University of Valencia, Valencia, Spain. DESIGN Experimental study. METHODS Wavefront aberrations in -3.00 D and -6.00 diopter (D) pIOLs were measured in vitro. Afterward, different simulated pIOL experimental prototypes were created along with variances in the spherical aberration. An adaptive optics visual simulator was used to simulate vision after the implantation of the different pIOL prototypes from their wavefront aberrations. The corrected distance visual acuity (CDVA) and depth of focus were measured in 3.0 and 4.5 mm pupils. RESULTS In a 3.0 mm pupil, the CDVA achieved with -3.00 and -6.00 D pIOLs and all pIOL prototypes evaluated was above 20/20 except for a -6.00 D pIOL + spherical aberration 4 at 50% CDVA contrast, which decreased to 20/25. However, in a 4.5 mm pupil, the CDVA obtained with the pIOL prototypes decreased significantly and was more pronounced when the spherical aberration induced was negative. The depth of focus increment was larger with the highest spherical aberration added and with a small pupil. Nevertheless, it was independent of the sign of the added spherical aberration. CONCLUSIONS The outcomes show that residual negative spherical aberration after pIOL implantation will disrupt the CDVA. However, some residual positive spherical aberration after pIOL implantation increased the depth of focus with excellent CDVA, providing a possible pIOL design for young presbyopic patients. FINANCIAL DISCLOSURE No author has a financial or proprietary interest in any material or method mentioned.
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Gonzalez-Lopez F, Alonso-Santander N, Mompean B, Bilbao-Calabuig R, Calvache JA, Beltran J. Visual outcomes in adult amblyopic eyes with moderate myopia after corneal laser surgery versus copolymer phakic intraocular lens implant. J Cataract Refract Surg 2015; 41:2513-23. [PMID: 26703502 DOI: 10.1016/j.jcrs.2015.05.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 05/25/2015] [Accepted: 05/27/2015] [Indexed: 11/17/2022]
Abstract
PURPOSE To assess visual acuity and refractive correction in moderately myopic adult eyes with suboptimal preoperative corrected distance visual acuity (CDVA) after laser in situ keratomileusis (LASIK) or insertion of a posterior chamber Implantable Collamer Lens phakic intraocular lens (pIOL). SETTING Clínica Baviera, Instituto Oftalmológico Europeo, Torrevieja Hospital, Madrid, Spain. DESIGN Retrospective study. METHODS The study sample included 1310 eyes that had LASIK and 94 that had insertion of a pIOL from July 2002 to September 2013. Suboptimal preoperative CDVA was defined as equal to logMAR 0.15 or below and moderate myopia as a spherical equivalent of -5.0 to -10.0 diopters (D). RESULTS The preoperative mean CDVA was 0.22 logMAR ± 0.09 (SD) in the LASIK group and 0.23 ± 0.09 logMAR in the pIOL group. Postoperative uncorrected distance visual acuity (UDVA) was 0.13 ± 0.12 logMAR in the laser group and 0.12 ± 0.09 logMAR in the pIOL group, with a postoperative CDVA of 0.11 ± 0.10 logMAR and 0.08 ± 0.07 logMAR, respectively. CONCLUSIONS Compared with preoperative values, amblyopic eyes with moderate myopia having LASIK or implantation of a pIOL demonstrated a statistically significant improvement in UDVA and CDVA (P < .001). The pIOL group performed significantly better than the LASIK group in terms of safety and efficiency. FINANCIAL DISCLOSURE No author has a financial or proprietary interest in any material or method mentioned.
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Affiliation(s)
- Felix Gonzalez-Lopez
- From the Clínica Baviera (Gonzalez-Lopez, Alonso-Santander, Mompean, Bilbao-Calabuig, Calvache, Beltran), Instituto Oftalmológico Europeo and the Department of Ophthalmology (Mompean), Torrevieja Hospital, Alicante, Spain.
| | - Nuria Alonso-Santander
- From the Clínica Baviera (Gonzalez-Lopez, Alonso-Santander, Mompean, Bilbao-Calabuig, Calvache, Beltran), Instituto Oftalmológico Europeo and the Department of Ophthalmology (Mompean), Torrevieja Hospital, Alicante, Spain
| | - Blas Mompean
- From the Clínica Baviera (Gonzalez-Lopez, Alonso-Santander, Mompean, Bilbao-Calabuig, Calvache, Beltran), Instituto Oftalmológico Europeo and the Department of Ophthalmology (Mompean), Torrevieja Hospital, Alicante, Spain
| | - Rafael Bilbao-Calabuig
- From the Clínica Baviera (Gonzalez-Lopez, Alonso-Santander, Mompean, Bilbao-Calabuig, Calvache, Beltran), Instituto Oftalmológico Europeo and the Department of Ophthalmology (Mompean), Torrevieja Hospital, Alicante, Spain
| | - Jose A Calvache
- From the Clínica Baviera (Gonzalez-Lopez, Alonso-Santander, Mompean, Bilbao-Calabuig, Calvache, Beltran), Instituto Oftalmológico Europeo and the Department of Ophthalmology (Mompean), Torrevieja Hospital, Alicante, Spain
| | - Jaime Beltran
- From the Clínica Baviera (Gonzalez-Lopez, Alonso-Santander, Mompean, Bilbao-Calabuig, Calvache, Beltran), Instituto Oftalmológico Europeo and the Department of Ophthalmology (Mompean), Torrevieja Hospital, Alicante, Spain
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Ferrer-Blasco T, García-Lázaro S, Belda-Salmerón L, Albarrán-Diego C, Montés-Micó R. Intra-eye visual function comparison with and without a central hole contact lens-based system: potential applications to ICL design. J Refract Surg 2013; 29:702-7. [PMID: 24094310 DOI: 10.3928/1081597x-20130919-03] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 07/15/2013] [Indexed: 11/20/2022]
Abstract
PURPOSE To evaluate the effects of a central hole contact lens-based design on visual performance and to compare it with the standard version of that same contact lens without the hole (non-hole scenario). METHODS The visual performance of 10 myopic patients wearing either a central hole myopic contact lens or its corresponding standard version (non-hole contact lens) was assessed on the same eye. Monocular corrected distance visual acuity was measured under photopic conditions and monocular contrast sensitivity was measured under both photopic and mesopic conditions and higher-order ocular aberrations using Hartmann-Shack aberrometry. An in vitro optical analysis of both contact lenses was performed and a symptoms questionnaire was administered to the participants. RESULTS No statistically significant differences in terms of corrected distance visual acuity were found: -0.091 and -0.098 logMAR for the hole and non-hole contact lenses, respectively (P > .05). Contrast sensitivity was comparable between lenses and no differences were found for specific spatial frequencies or a particular luminance level (P > .05). The hole contact lenses provided excellent outcomes, essentially equivalent to those of non-hole contact lenses, even in terms of subjective symptoms such as glare or halo. In vivo and in vitro optical quality analysis revealed no statistically significant differences between the hole and the non-hole contact lenses for either pupil size (P > .1). CONCLUSION A contact lens having a central hole provides good visual and optical quality outcomes comparable to those yielded by the same lens without a hole. The results suggest that the impact of a central hole may be clinically negligible.
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Optical and visual simulation of standard and modified spherical aberration implantable Collamer lens post myopic LASIK surgery. Eur J Ophthalmol 2013; 24:330-7. [PMID: 24057938 DOI: 10.5301/ejo.5000372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2013] [Indexed: 11/20/2022]
Abstract
PURPOSE To evaluate the visual quality achieved in patients undergoing standard or modified implantable Collamer lens (ICL) to correct residual myopic error after laser-assisted in situ keratomileusis (LASIK) surgery. METHODS The adaptive optics visual simulator was used to simulate LASIK surgery of moderate and high myopia with a myopic regression corrected by a standard and modified ICL. Visual acuity (VA) and contrast sensitivity (CS) were measured in 14 subjects at 3- and 4.5-mm pupil. Point spread function and simulated retinal images were calculated. RESULTS Comparing LASIK plus standard ICL and LASIK plus modified ICL simulations, for moderate myopia, VA improvement was less than 1 line in all VA contrasts and both pupils evaluated. No statistically significant differences were found in CS between the simulations at any spatial frequency evaluated and for 3-mm pupil (p>0.05), but differences were significant at 4.5-mm pupil (p<0.05). For high myopia, the VA improvement was less than 1 line at 3-mm pupil, although it increased 2 or more lines at 4.5-mm pupil. Statistically significant differences were found in CS between the simulations for all spatial frequencies and both pupils evaluated (p<0.05), except for low and medium spatial frequencies at 3-mm pupil (p>0.05). CONCLUSIONS These outcomes suggest that an ICL is a good option to correct the myopic residual error after myopic LASIK. When the ICL's spherical aberration is modified, the post-LASIK eyes of high myopia are the most benefited, as these eyes are more aberrated than after moderate myopic LASIK.
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Wang L, Moss H, Ventura BV, Padilha H, Hester C, Koch DD. Advances in Refractive Surgery. Asia Pac J Ophthalmol (Phila) 2013; 2:317-27. [PMID: 26107036 DOI: 10.1097/apo.0b013e3182a90647] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
PURPOSE The objective of this study was to review advances in the field of refractive surgery as reported in the peer-reviewed literature over the previous year. DESIGN This was a literature review. METHODS We conducted a PubMed search for terms related to refractive surgery and reviewed prominent international ophthalmic journals published from May 2012 through April 2013. All pertinent articles were reviewed, and selected articles with the greatest relevance were included. RESULTS Many studies over the previous year have highlighted progress in the field of refractive surgery; topics included keratoconus screening, photorefractive keratectomy and laser in situ keratomileusis, corneal cross-linking, small-incision lenticule extraction, phakic intraocular lenses, corneal inlays, presbyopic corneal treatments, and femtosecond laser-assisted astigmatic keratotomy. CONCLUSIONS The field of refractive surgery continues to provide exciting developments. Improvements in established procedures and promising new surgical options make the current climate an appealing one for refractive surgeons and patients.
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Affiliation(s)
- Li Wang
- From the *Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX; and †Altino Ventura Foundation, Recife; and ‡Hospital de Olhos do Paraná, Curitiba, Brazil
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Optical quality comparison of conventional and hole-visian implantable collamer lens at different degrees of decentering. Am J Ophthalmol 2013; 156:69-76.e1. [PMID: 23540712 DOI: 10.1016/j.ajo.2013.01.030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 01/25/2013] [Accepted: 01/29/2013] [Indexed: 02/07/2023]
Abstract
PURPOSE To compare the optical quality of implantable Collamer lens (ICL) with and without central hole (Hole ICL and conventional ICL) at different degrees of decentering. DESIGN Experimental laboratory investigation. METHODS Wavefront aberrations of the -3, -6, and -12 diopter (D) V4b and -3, -6, and -12 D V4c ICLs were measured in 3 conditions-centered and decentered 0.3 and 0.6 mm-at 3-mm and 4.5-mm pupils. The root mean square of total higher order aberrations, trefoil, coma, tetrafoil, secondary astigmatism, and spherical aberration were evaluated. In addition, point spread function and simulated retinal images of ICLs were calculated from the wavefront aberrations for each ICL and all conditions of decentering at 4.5-mm pupil. RESULTS No statistically significant differences in any Zernike coefficient terms evaluated were found between conventional and Hole ICLs for any ICL powers and pupils evaluated (P > .05). We could not appreciate differences in the point spread function images and in simulated retinal images. Regarding the effect of the ICL decentration, coma aberration increased significantly with ICL decentration (P < .05), although these differences were not visible in the point spread function images and simulated retinal images. The ICL decentration was affected in the same manner on the conventional and Hole ICLs. CONCLUSIONS The outcomes showed good and comparable optical quality of the conventional and Hole ICLs for all ICL powers evaluated. Despite that coma aberration increased with ICL decentering, these values were clinically negligible and did not have a significant effect on the simulated visual performance.
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