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Rocha KM, Brown CE, Sioufi K, Gouvea L. Toric implantable collamer lens for treating refractive error in post-radial keratotomy, post-penetrating keratoplasty pseudophakic eye. Am J Ophthalmol Case Rep 2020; 20:100882. [PMID: 33024884 PMCID: PMC7527704 DOI: 10.1016/j.ajoc.2020.100882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/02/2020] [Accepted: 08/16/2020] [Indexed: 10/27/2022] Open
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Gundersen KG, Potvin R. Refractive and Visual Outcomes After Implantation of a Secondary Toric Sulcus Intraocular Lenses. Clin Ophthalmol 2020; 14:1337-1342. [PMID: 32546940 PMCID: PMC7244900 DOI: 10.2147/opth.s255725] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 05/06/2020] [Indexed: 11/24/2022] Open
Abstract
Purpose To evaluate the rotational stability, visual acuity and refractive error after sulcus implantation of a secondary toric IOL. Setting One clinical practice in Haugesund, Norway. Design Non-interventional single-arm diagnostic study. Methods Eligible subjects who had previous successful primary cataract or refractive lens exchange surgery in one or both eyes and the AddOn® secondary toric IOL implanted in the sulcus were evaluated at a single postoperative diagnostic visit to measure visual outcomes. Subjects with surgical complications (either primary or secondary) or pathology that would affect best-corrected visual acuity (eg, amblyopia) were excluded. Clinical evaluations at the diagnostic visit included measurement of visual acuity, manifest refraction and IOL orientation. Results Eighteen eyes were evaluated. After secondary IOL implantation, mean residual refractive astigmatism was significantly reduced (1.66 ± 0.92 to 0.32 ± 0.25 D). There was no appreciable change in the spherical equivalent refraction. Sixteen of 18 eyes (89%) had residual refractive astigmatism ≤0.50D, and no eye had more than 0.75D after secondary IOL implantation. Mean UCVA was 0.00 ± 0.03 logMAR, with no eyes worse than 0.10. Mean BCVA was −0.05 ± 0.03 logMAR (20/20+2), with all eyes having BCVA of 0.00 logMAR. The mean change in orientation was near zero, with a mean absolute change of 4.9 ± 3.7 degrees. Sixteen of 18 eyes (89%) had a lens orientation ≤10 degrees from intended, with no eye oriented more than 13 degrees from intended. Conclusion The AddOn® toric sulcus IOL significantly reduced postoperative refractive astigmatism in patients with high astigmatism after their primary cataract or RLE surgery, providing very good uncorrected distance vision.
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Duncker GI, Sasse AC, Duncker T. A prospective pilot study using a low power piggy-back toric implantable Collamer lens to correct residual refractive error after multifocal IOL implantation. Clin Ophthalmol 2019; 13:1689-1702. [PMID: 31564818 PMCID: PMC6731978 DOI: 10.2147/opth.s219738] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 08/15/2019] [Indexed: 11/23/2022] Open
Abstract
Purpose To assess whether residual refractive error after in-the-bag multifocal intraocular lens (mIOL) implantation can efficaciously and safely be corrected with a piggy-back low power Visian Toric Implantable Collamer Lens® (VTICL, STAAR Surgical) placed in the ciliary sulcus. Patients and methods Twenty-four eyes of 23 patients (mean age: 57.5 years) with diminished uncorrected distance visual acuity (UDVA) of ≥2 lines due to residual refractive error after mIOL implantation were included in the study. VTICL size was calculated using the standard STAAR Visian ICL calculation software for phakic eyes. Postoperative study visits (1 day, 1 week, 3 months and 6 months after VTICL implantation) included UDVA, corrected distance visual acuity (CDVA), VTICL axis alignment, vault (space between mIOL and VTICL), IOP and documentation of adverse events. Results At 6 months, mean UDVA (logMAR) increased from 0.26 preoperatively to −0.01 (P<0.001) while mean CDVA remained unchanged. Mean VTICL misalignment from the preoperative target axis was 5.3° and mean vault was 1385 µm. In the initial phase of the study, 2 VTICL had to be exchanged due to oversizing. Conclusion Piggy-back low power VTICL can efficaciously correct residual refractive error after mIOL implantation and significantly increase UDVA. Advantages of this novel surgical approach include: VTICL availability in small diopter steps, no significant surgical-induced astigmatism, atraumatic and reversible procedure.
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Kamiya K, Shimizu K, Igarashi A, Kitazawa Y, Kojima T, Nakamura T, Ichikawa K. Piggyback implantable collamer lens implantation for the correction of residual refractive errors after cataract surgery: a multicenter study. Acta Ophthalmol 2019; 97:e946-e947. [PMID: 30298628 DOI: 10.1111/aos.13937] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazutaka Kamiya
- Visual Physiology School of Allied Health Sciences Kitasato University Kanagawa Japan
| | | | | | | | - Takashi Kojima
- Department of Ophthalmology Japanese Red Cross Gifu Hospital Gifu Japan
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Schempf T, Jung HC. Off-Label Use of Phakic Intraocular Lens with a "Piggyback" Technique. Case Rep Ophthalmol 2018; 9:465-472. [PMID: 30519183 PMCID: PMC6276743 DOI: 10.1159/000494712] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 10/21/2018] [Indexed: 12/03/2022] Open
Abstract
Purpose We report a case of a highly myopic pseudophakic patient who received off-label placement of a phakic intraocular lens (pIOL) via a “piggyback” technique, allowing the placement of an intraocular lens (IOL) in his fellow eye, resulting in improved visual acuity and emmetropia. Case Report A 66-year-old, highly myopic, pseudophakic male with an IOL implant in his left eye was referred for second opinion for surgical options for his phakic right eye. Given the severe myopic status of both eyes, he received off-label placement of a posterior chamber pIOL with a piggyback technique for the pseudophakic left eye followed by standard cataract surgery and intraocular lens implantation in the right eye. For the left eye, uncorrected best visual acuity improved from 20/70 to 20/25. Conclusion This case demonstrates the successful off-label use of a phakic IOL in a pseudophakic, highly myopic patient with a piggyback technique, resulting in improved visual acuity and ultimately allowing IOL placement in the fellow eye for emmetropia. This off-label use of pIOL can offer ophthalmologists an alternative option for pseudophakic patents with severe refractive error.
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Affiliation(s)
- Tadgh Schempf
- New York University School of Medicine, New York, New York, USA
| | - Hoon C Jung
- University of Washington Department of Ophthalmology, Seattle, Washington, USA.,Veterans Affairs Puget Sound Health Care System, Seattle, Washington, USA
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McLintock CA, McKelvie J, Gatzioufas Z, Wilson JJ, Stephensen DC, Apel AJG. Outcomes of toric supplementary intraocular lenses for residual astigmatic refractive error in pseudophakic eyes. Int Ophthalmol 2018; 39:1965-1972. [PMID: 30374760 DOI: 10.1007/s10792-018-1027-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 09/21/2018] [Indexed: 11/26/2022]
Abstract
PURPOSE To evaluate rotational stability and visual and refractive outcomes of supplementary toric IOLs (Sulcoflex Toric 653T, Rayner Intraocular Lenses Ltd) for residual astigmatic refractive error in pseudophakic eyes. METHODS A retrospective interventional case series was conducted in a single surgeon practice. Charts of patients who had Sulcoflex Toric supplementary IOLs inserted between June 2009 and September 2015 were reviewed. Outcomes were compared between eyes with and without prior corneal transplant. Patients with at least 3-months follow-up were included. RESULTS In 51 eyes, mean UDVA improved from 20/86 to 20/43 (p = 0.002), though UDVA was better in eyes without corneal grafts (20/31) than eyes with (20/62). The proportion of eyes achieving 20/20 UDVA was 43%, 61% and 17% overall, in eyes with prior graft and in eyes with no prior graft, respectively. Sixty-four percentage achieved a spherical equivalent of within 0.5D of target (84% no graft, 34% prior graft). Fifty-three percentage of eyes achieved a cylinder of within 0.5D of target (no graft: 73%, prior graft: 0%). Mean lens rotation was 8.23° on day 1, and mean maximal rotation during follow-up was 17.63°. Sixty-two percentage of IOLs required repositioning. Of those that required repositioning, this was conducted a mean of 2.3 times. The mean final IOL rotation (following repositioning if required) was 6.17°. CONCLUSION Sulcoflex Toric supplementary IOLs result in good visual and refractive outcomes in eyes with no prior corneal graft. However, outcomes are sub-optimal in eyes with prior corneal transplantation, and the majority of lenses require repositioning.
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Affiliation(s)
- Cameron A McLintock
- Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Brisbane, QLD, 4102, Australia.
- Queen Victoria Hospital, Holtye Road, East Grinstead, RH19 3DZ, UK.
| | - James McKelvie
- Queen Victoria Hospital, Holtye Road, East Grinstead, RH19 3DZ, UK
| | - Zisis Gatzioufas
- Queen Victoria Hospital, Holtye Road, East Grinstead, RH19 3DZ, UK
| | - Jessica J Wilson
- The Eye Health Centre, 87 Wickham Terrace, Brisbane, QLD, 4000, Australia
| | - David C Stephensen
- The Eye Health Centre, 87 Wickham Terrace, Brisbane, QLD, 4000, Australia
| | - Andrew J G Apel
- The Eye Health Centre, 87 Wickham Terrace, Brisbane, QLD, 4000, Australia
- Princess Alexandra Hospital, 199 Ipswich Road, Woolloongabba, Brisbane, QLD, 4102, Australia
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Alfonso JF, Lisa C, Alfonso-Bartolozzi B, Fernández-Vega-Cueto L, Montés-Micó R. Implantable Collamer Lens
®
for Management of Pseudophakic Ametropia in Eyes With a Spectrum of Previous Corneal Surgery. J Refract Surg 2018; 34:654-663. [DOI: 10.3928/1081597x-20180815-01] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/13/2018] [Indexed: 11/20/2022]
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Gundersen KG, Potvin R. A review of results after implantation of a secondary intraocular lens to correct residual refractive error after cataract surgery. Clin Ophthalmol 2017; 11:1791-1796. [PMID: 29042749 PMCID: PMC5633306 DOI: 10.2147/opth.s144675] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The purpose of this study was to provide clinical outcomes data related to secondary intraocular lens (IOL) implantation for the correction of residual refractive error after cataract surgery. PATIENTS AND METHODS A chart review was conducted to identify all eyes implanted with the monofocal spherical or toric AddOn® secondary IOL. Data were collated from charts where uncomplicated initial cataract surgery was completed. Measures of interest included the original IOL implanted, the postoperative refractive error (before secondary IOL implantation) and the associated corrected and uncorrected visual acuities (VAs). Postoperative data of interest included the residual refractive error, the best-corrected visual acuity (BCVA) and uncorrected visual acuity (UCVA). RESULTS Refractive and VA data from 1 week to 3 months post-surgery were available for 46 of 70 eyes implanted with a secondary IOL by one surgeon at one practice between 4/15 and 3/17. There was a statistically significant improvement in UCVA of about 2 lines after surgery (p<0.01), with no change in BCVA (p=0.94). No eyes lost a line of BCVA. There was a statistically significant reduction in the absolute magnitude of the residual spherical equivalent refractive error (p<0.01). In the 10 cases with a toric secondary IOL, there was a statistically significant reduction in refractive cylinder (p<0.01). CONCLUSION The secondary IOL studied here appears to be a viable surgical option to correct residual refractive error after primary IOL implantation.
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Eissa SA, Khafagy MM, Sidky MK. Implantable Collamer Lens in the Management of Pseudophakic Ametropia. J Refract Surg 2017; 33:532-537. [DOI: 10.3928/1081597x-20170606-02] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Accepted: 05/16/2017] [Indexed: 11/20/2022]
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Eissa SA. Management of pseudophakic myopic anisometropic amblyopia with piggyback Visian ® implantable collamer lens. Acta Ophthalmol 2017; 95:188-193. [PMID: 27681455 DOI: 10.1111/aos.13203] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 06/21/2016] [Indexed: 11/29/2022]
Abstract
PURPOSE To assess the outcomes of sulcus implantation of the Visian® implantable collamer lens (ICL) to correct pseudophakic myopic anisometropic amblyopia with myopic shift and/or primary refractive overcorrection. METHODS Prospective case series enrolled 14 pseudophakic eyes of 14 patients, 5-9 years old, with history of cataract surgery and primary in the bag-intraocular lenses (IOL) implantation, followed by myopic shift and/or refractive overcorrection and anisometropic amblyopia of variable degrees. All cases had implantation of a piggyback ICL/toric ICL, to correct the myopia/myopic astigmatism. Preoperatively, we evaluated the uncorrected distance visual acuity (UCVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent (MRSE), intraocular pressure (IOP) and endothelial cell density (ECD). We assessed the position and vaulting of the ICLs on slit lamp examination and confirmed by Scheimpflug tomography. Postoperative follow-up was at 1st week and 1, 3, 6, 9, 12, 18 and 24 months. RESULTS Uncorrected distance visual acuity improved in all cases, and CDVA improved in 11 amblyopic eyes (2-4 lines). There was no evidence of interlenticular opacification (ILO) throughout the 2-year follow-up. Two cases were complicated with early postoperative acute elevation of IOP and were controlled with topical beta-blockers. Postoperative acute anterior uveitis occurred in six eyes and controlled by topical steroids. Implantable collamer lens (ICL) vault was measured using Pentacam, with mean value of 470 ± 238 μm. CONCLUSION Sulcus implantation of the secondary piggyback ICL to correct unilateral pseudophakic myopic refractive error in children was safe, efficient, predictable and well tolerated in management of anisometropic amblyopia in all eyes.
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Affiliation(s)
- Sherif A. Eissa
- Faculty of medicine; Kasr Al Ainy; Ophthalmology department; Cairo University; Cairo Egypt
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Chen X, Wang X, Zhou X. Pseudophakic ametropia management with toric implantable collamer lens with a central hole (case report). BMC Ophthalmol 2017; 17:17. [PMID: 28222711 PMCID: PMC5320740 DOI: 10.1186/s12886-017-0414-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 02/17/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To report the clinical outcomes of correcting pseudophakic ametropia using toric implantable collamer lens with a 360 um central hole (TICL V4c). CASE PRESENTATION The right eye of a 22-year-old male patient developed high myopia after unilateral phacoemulsification and intraocular lens (IOL) implantation following traumatic cataract 16 years ago. The manifest refraction was -11.50 DS/-2.50 DC × 175 with an uncorrected distance visual acuity (UDVA) of 20/2000 and a corrected distance visual acuity (CDVA) of 20/20. The manifest refraction of left eye was -6.25 DS/-3.75 DC × 180 with UDVA 20/200 and CDVA 20/20. Both eyes were implanted posterior chamber TICL V4c lens. Postoperatively, the refractive errors were +1.00 DS/-0.50 DC × 50 with UDVA 20/16 and CDVA 20/16 in the right eye and +0.75 DS/-0.75 DC × 45 with UDVA 20/16 and CDVA 20/13 in the left eye, respectively. No complications were observed. CONCLUSIONS TICL V4c is safe, effective and predictable in managing pseudophakic ametropia.
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Affiliation(s)
- Xun Chen
- Myopia Key Laboratory of the Health Ministry, Shanghai, China.,EYE & ENT Hospital of Fudan University, Shanghai, China
| | - Xiaoying Wang
- Myopia Key Laboratory of the Health Ministry, Shanghai, China. .,EYE & ENT Hospital of Fudan University, Shanghai, China.
| | - Xingtao Zhou
- Myopia Key Laboratory of the Health Ministry, Shanghai, China.,EYE & ENT Hospital of Fudan University, Shanghai, China
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Emara KE, Al Abdulsalam O, Al Habash A. Secondary implantation of implantable collamer lens (ICL) for correction of anisometropic hyperopia in a 3-year-old pseudophakic child. Saudi J Ophthalmol 2016; 30:75-7. [PMID: 26949366 PMCID: PMC4759508 DOI: 10.1016/j.sjopt.2015.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/28/2015] [Accepted: 12/07/2015] [Indexed: 12/14/2022] Open
Abstract
We report the first case of secondary implantation of implantable collamer lens (ICL) for correction of anisometropic hyperopia in a 3-year-old pseudophakic child. The ICL implantation was considered in our patient due to parental noncompliance for contact lens and spectacles use for one year. In terms of efficacy, the preoperative refractive error of +7.00–1.75 diopter (D) reduced to +1.00–1.75 D. The uncorrected distance visual acuity (UDVA) significantly improved from 20/400 (preoperatively) to 20/50 (postoperatively). In terms of safety, after an uneventful implantation surgery, the ICL was well tolerated, and remained well centered, with no serious postoperative complications encountered over a 22-month follow-up.
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Affiliation(s)
- Khalid E Emara
- Pediatric Ophthalmology Division, Dhahran Eye Specialist Hospital, Dhahran, Saudi Arabia
| | - Omar Al Abdulsalam
- Department of Ophthalmology, King Abdulaziz Hospital - Al Ahsa, National Guard Health Affairs, Saudi Arabia
| | - Ahmed Al Habash
- Department of Ophthalmology, University of Dammam, Dammam, Saudi Arabia
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Gundersen KG, Makari S, Ostenstad S, Potvin R. Retreatments after multifocal intraocular lens implantation: an analysis. Clin Ophthalmol 2016; 10:365-71. [PMID: 27041983 PMCID: PMC4780184 DOI: 10.2147/opth.s100840] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose To determine the incidence and etiology of required retreatment after multifocal intraocular lens (IOL) implantation and to evaluate the methods and clinical outcomes of retreatment. Patients and methods A retrospective chart review of 416 eyes of 209 patients from one site that underwent uncomplicated cataract surgery with multifocal IOL implantation. Biometry, the IOL, and refractive data were recorded after the original implantation, with the same data recorded after retreatment. Comments related to vision were obtained both before and after retreatment for retreated patients. Results The multifocal retreatment rate was 10.8% (45/416 eyes). The eyes that required retreatment had significantly higher residual refractive astigmatism compared with those who did not require retreatment (1.21±0.51 D vs 0.51±0.39 D, P<0.01). The retreatment rate for the two most commonly implanted primary IOLs, blended bifocal (10.5%, 16/152) and bilateral trifocal (6.9%, 14/202) IOLs, was not statistically significantly different (P=0.12). In those requiring retreatment, refractive-related complaints were most common. Retreatment with refractive corneal surgery, in 11% of the eyes, and piggyback IOLs, in 89% of the eyes, was similarly successful, improving patient complaints 78% of the time. Conclusion Complaints related to ametropia were the main reasons for retreatment. Residual astigmatism appears to be an important determinant of retreatment rate after multifocal IOL implantation. Retreatment can improve symptoms for a high percentage of patients; a piggyback IOL is a viable retreatment option.
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Price MO, Price FW. Evaluation of the toric implantable collamer lens for simultaneous treatment of myopia and astigmatism. Expert Rev Med Devices 2014; 12:25-39. [PMID: 25418502 DOI: 10.1586/17434440.2015.984685] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Myopic astigmatism is a prevalent condition that can be treated with spectacles, contact lenses, or laser refractive surgery. However, these treatment options have functional limitations at higher levels of refractive error. The toric implantable collamer lens is designed to treat a broad range of refractive error, generally up to -18 diopters with +1 to +6 diopters of astigmatism. Approval for a more limited treatment range of up to 15 diopters of myopia with +1 to +4 diopters of astigmatism is being sought in the US, where this device has not yet received marketing approval. Surgical correction of high-myopic astigmatism can be life-altering and allow people to participate in activities that were not previously feasible because of visual limitations. The toric implantable collamer lens is implanted behind the iris and in front of the natural crystalline lens. With earlier lens designs, it was necessary to create an iridectomy or iridotomy to prevent pupillary block. The newest toric implantable collamer lens model has a small central hole that is not visually noticeable. This eliminates the need to create a hole in the iris, thereby enhancing the safety of the procedure.
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Affiliation(s)
- Marianne O Price
- Cornea Research Foundation of America, 9002 N. Meridian St, Suite 212, Indianapolis, IN 46260, USA
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Scialdone A, De Gaetano F, Monaco G. Visual performance of 2 aspheric toric intraocular lenses: comparative study. J Cataract Refract Surg 2013; 39:906-14. [PMID: 23688877 DOI: 10.1016/j.jcrs.2013.01.037] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 12/20/2012] [Accepted: 01/15/2013] [Indexed: 11/30/2022]
Abstract
PURPOSE To compare the visual and aberrometric outcomes of 2 aspheric toric intraocular lenses (IOLs). SETTING Fatebenefratelli e Oftalmico Hospital, Milan, Italy. DESIGN Prospective randomized comparative study. METHODS Astigmatic patients had cataract surgery with implantation of an Acrysof SN6AT IOL (Group A) or an AT Torbi 709M IOL (Group B). The uncorrected (UDVA) and corrected (CDVA) distance visual acuities, net refractive astigmatism, spherical equivalent (SE), IOL misalignment, and optical quality were evaluated 3 months postoperatively. RESULTS The study included 72 eyes. No statistically significant difference was found in UDVA, CDVA, residual refractive astigmatism, intraocular or total higher-order aberrations (Z(n,i) (order of aberrations calculated: 3≤n≤8), coma Z(3,±1), or trefoil Z(3,±2). The UDVA was 0.3 logMAR or better in all eyes and 0.1 logMAR or better in 55.5% of eyes in Group A and in 61.1% of eyes in Group B. Considering polar value analysis, 94.4% of eyes in both groups had a refractive astigmatism value within ±0.50 diopter at KP90 (polar value along 90-degree meridian). The SE was closer to emmetropia in Group A (P=.01). Intraocular lens misalignment of less than 5 degrees was present in 61.1% of cases in Group A (maximum 9 degrees) and in 66.6% in Group B (maximum 11 degrees). Spherical aberration Z(4,0) was significantly lower in Group B. CONCLUSIONS Both IOLs had similar clinical effectiveness in term of astigmatism correction, rotational stability, and optical quality. Eyes in Group A appeared significantly nearer to emmetropia, while the IOL in Group B induced significantly less spherical aberration. FINANCIAL DISCLOSURE No author has a financial or proprietary interest in any material or method mentioned.
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Pisella PJ. [Post-operative residual astigmatism after cataract surgery: Current surgical methods of treatment]. J Fr Ophtalmol 2012; 35:226-8. [PMID: 22226766 DOI: 10.1016/j.jfo.2011.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 08/24/2011] [Accepted: 08/25/2011] [Indexed: 10/14/2022]
Abstract
Residual astigmatism after cataract surgery can be corrected by three different techniques: classic limbal relaxing incisions, easy to perform but with limited precision; laser refractive surgery (PRK or Lasik), additionally allowing for correction of spherical equivalent; and more recently the use of a piggyback toric intraocular lens in the ciliary sulcus.
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Affiliation(s)
- P-J Pisella
- Université François-Rabelais, hôpital Bretonneau, 2, boulevard Tonnelle, 37000 Tours, France.
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Bibliography. Cataract surgery and lens implantation. Current world literature. Curr Opin Ophthalmol 2011; 23:73-7. [PMID: 22157249 DOI: 10.1097/icu.0b013e32834ee34b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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