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[PMID]:29227508
[Au] Autor:Tandogan T; Son HS; Choi CY; Knorz MC; Auffarth GU; Khoramnia R
[Ti] Título:Laboratory Evaluation of the Influence of Decentration and Pupil Size on the Optical Performance of a Monofocal, Bifocal, and Trifocal Intraocular Lens.
[So] Source:J Refract Surg;33(12):808-812, 2017 Dec 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To assess the influence of decentration and aperture size on the optical quality of different intraocular lenses (IOLs) of the same material, body design, and refractive power using standardized optical bench testing. METHODS: Using an optical bench set-up, an aspheric monofocal (CT ASPHINA 409M; Carl Zeiss Meditec, Jena, Germany), an aspheric diffractive bifocal (AT LISA 809M; Carl Zeiss Meditec), and an aspheric diffractive trifocal (AT LISA 839M; Carl Zeiss Meditec) intraocular lens (IOL) were evaluated, each with the same distance power, body design, and material. Modulation transfer function (MTF) values were measured at spatial frequencies of 50 lp/mm and aperture sizes of 3 and 4.5 mm. Each IOL was measured while centered, then decentered by 0.25, 0.5, 0.75, and 1 mm. RESULTS: MTF values for the monofocal IOL at far focus with 3- and 4.5-mm aperture size were 0.80/0.80 with maximum reduction to 0.77/0.73 for 1-mm decentration, respectively. Centered IOL MTFs of the bifocal and trifocal IOLs were lower for the far focus at 0.46/0.41 and 0.39/0.26, with reduction at 1-mm decentration to 0.35/0.25 and 0.25/0.18, respectively. Values for near focus of the bifocal and trifocal IOLs reduced from 0.27/0.31 and 0.19/0.18 to 0.2/0.21 and 0.12/0.13, respectively. The trifocal intermediate focus MTF reduced from 0.15/0.10 to 0.12/0.08. MTF values of all three lenses decreased significantly under all conditions with decentration of 0.5 to 0.75 mm. CONCLUSIONS: Monofocal lenses were least negatively affected by decentration, with mean optical quality reduction of less than 10% for 1-mm decentration at physiological pupil sizes. For diffractive bifocal and trifocal lenses, optical quality at all distances was significantly reduced if decentration exceeded 0.75 mm, with intermediate focus showing the least reduction. [J Refract Surg. 2017;33(12):808-812.].
[Mh] Termos MeSH primário: Migração do Implante de Lente Intraocular/fisiopatologia
Iris/anatomia & histologia
Lentes Intraoculares
Óptica e Fotônica
Pseudofacia/fisiopatologia
Pupila/fisiologia
Refração Ocular/fisiologia
[Mh] Termos MeSH secundário: Seres Humanos
Modelos Teóricos
Desenho de Prótese
Visão Ocular
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180223
[Lr] Data última revisão:
180223
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20171004-02


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[PMID]:29208827
[Au] Autor:Roop P; Roop
[Ad] Endereço:Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India.
[Ti] Título:Optimizing optical outcomes of intraocular lens implantation by achieving centration on visual axis.
[So] Source:Indian J Ophthalmol;65(12):1425-1427, 2017 Dec.
[Is] ISSN:1998-3689
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:In existing designs of intraocular lenses (IOLs), optical outcomes are compromised even after perfectly executed surgery. The reason for this is misalignment of optical axis of the eye and its visual axis. There is a need to design an IOL which compensates for this misalignment and hence enhances the optical outcomes of cataract surgery. The present innovation attempts to fulfill this unmet need and optimizes optical outcomes of all IOLs of different optical profiles - spherical, aspheric, toric, and multifocal. In addition, the improvised design of IOL offers other benefits such as delaying the formation of after-cataract and ameliorating negative dysphotopsia.
[Mh] Termos MeSH primário: Migração do Implante de Lente Intraocular/prevenção & controle
Implante de Lente Intraocular/métodos
Lentes Intraoculares
Modelos Teóricos
Refração Ocular
[Mh] Termos MeSH secundário: Seres Humanos
Desenho de Prótese
Resultado do Tratamento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1712
[Cu] Atualização por classe:180103
[Lr] Data última revisão:
180103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171207
[St] Status:MEDLINE
[do] DOI:10.4103/ijo.IJO_653_17


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[PMID]:28573991
[Au] Autor:Rishi P; Rishi E; Maitray A
[Ad] Endereço:Department of Vitreoretinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India.
[Ti] Título:Surgical refixation of posteriorly dislocated intraocular lens with scleral-tuck technique.
[So] Source:Indian J Ophthalmol;65(5):365-370, 2017 May.
[Is] ISSN:1998-3689
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To report the outcomes of surgical refixation of posteriorly dislocated intraocular lens (IOL) using scleral-tuck method, and to compare the "scleral groove" and the "scleral flap" techniques used. STUDY DESIGN: Single-center, retrospective, interventional, comparative study. METHODS: Medical records of patients undergoing closed globe scleral refixation of posteriorly dislocated posterior chamber IOL (PCIOLs) by scleral-tuck method using two different techniques ("scleral groove" vs. "scleral flap" technique) were reviewed. This approach involved retrieving the dislocated PCIOL, externalizing the haptics through 2 sclerotomies created in paralimbal lamellar scleral grooves, or under lamellar scleral flaps and tucking the haptics into limbus-parallel scleral tunnels. No specific haptic architecture, haptic suturing, or large incisions were needed. Main outcome measures included best-corrected visual acuity (BCVA), final mean refractive error, and intra- and post-operative complications. RESULTS: Thirteen eyes of 13 patients (scleral groove, n = 6; scleral flap, n = 7 eyes) with a mean follow-up of 20.6 months were included. BCVA in all eyes was maintained or improved postoperatively, with three eyes (23%) showing ≥2 line improvement. Median astigmatic error at 6-week follow-up was -1.25 D cylinder (range: -0.5 D--2.0 D) which remained stable till final follow-up. All IOLs remained stable and well centered. None of the eyes had a recurrent dislocation, retinal detachment, endophthalmitis, or glaucoma. Both techniques were comparable in terms of postoperative BCVA, and refraction. CONCLUSION: Intrascleral haptic fixation by scleral-tuck method is reliable and effective for secure IOL refixation of posteriorly dislocated IOLs, providing good IOL centration and stability with minimal surgically-induced astigmatism. Both techniques (scleral groove and scleral flap) appear to have similar outcomes in the short term.
[Mh] Termos MeSH primário: Migração do Implante de Lente Intraocular/cirurgia
Segmento Posterior do Olho/cirurgia
Complicações Pós-Operatórias
Esclera/cirurgia
Retalhos Cirúrgicos
Técnicas de Sutura
Acuidade Visual
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Migração do Implante de Lente Intraocular/diagnóstico
Feminino
Seguimentos
Seres Humanos
Masculino
Meia-Idade
Estudos Retrospectivos
Resultado do Tratamento
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170919
[Lr] Data última revisão:
170919
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170603
[St] Status:MEDLINE
[do] DOI:10.4103/ijo.IJO_960_16


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[PMID]:28345572
[Au] Autor:Ganesh SK; Sen P; Sharma HR
[Ad] Endereço:Sankara Nethralaya Medical Research Foundation, Chennai, Tamil Nadu, India.
[Ti] Título:Late dislocation of in-the-bag intraocular lenses in uveitic eyes: An analysis of management and complications.
[So] Source:Indian J Ophthalmol;65(2):148-154, 2017 Feb.
[Is] ISSN:1998-3689
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:AIM: An analysis of late in-the-bag dislocation of intraocular lenses (IOL), in uveitic eyes. SETTING: Referral uveitis clinic. DESIGN: Retrospective case series. MATERIALS AND METHODS: All case records of eyes with chronic uveitis that had phacoemulsification with IOL implantation, at a referral uveitis clinic between February 1997 and January 2015 were retrieved and analyzed. Only those eyes with no documented intraoperative complication and no predisposing risks to IOL dislocation, such as pseudoexfoliation, high myopia, trauma, and prior VR surgery were included in this study. RESULTS: A total of 581 eyes with chronic uveitis underwent phacoemulsification with IOL implantation under steroid cover from February 1997 to December 2015. Out of these 581 eyes, 10 patients (11 eyes) had experienced late in-the-bag IOL dislocation (1.89%). All 11 eyes had chronic intermediate uveitis. The mean duration from the time of cataract surgery to IOL dislocation was 11.24 years. 5 out of 11 eyes had pars plana vitrectomy (PPV) with IOL removal with 4-point sutured scleral fixated IOL. Two out of 11 eyes had PPV with in-the-bag IOL re-fixation. Out of 11, 2 eyes had PPV with IOL removal only. Remaining 2 eyes of 2 patients did not opt for surgery. Out of 11, 8 eyes had improved vision at last follow-up. CONCLUSIONS: In-the-bag dislocation of IOL is a rare late complication in uveitic eyes. With tight perioperative inflammatory control, scleral-fixated posterior chamber intraocular lens or IOL re-fixation are good options of restoring vision in these high-risk eyes.
[Mh] Termos MeSH primário: Migração do Implante de Lente Intraocular/diagnóstico
Remoção de Dispositivo/métodos
Gerenciamento Clínico
Lentes Intraoculares/efeitos adversos
Facoemulsificação/efeitos adversos
Complicações Pós-Operatórias
Uveíte/complicações
[Mh] Termos MeSH secundário: Adulto
Migração do Implante de Lente Intraocular/etiologia
Migração do Implante de Lente Intraocular/cirurgia
Catarata/complicações
Doença Crônica
Feminino
Seguimentos
Seres Humanos
Masculino
Meia-Idade
Estudos Retrospectivos
Fatores de Tempo
Uveíte/diagnóstico
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170816
[Lr] Data última revisão:
170816
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170328
[St] Status:MEDLINE
[do] DOI:10.4103/ijo.IJO_938_16


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[PMID]:27914839
[Au] Autor:Kristianslund O; Råen M; Østern AE; Drolsum L
[Ad] Endereço:Department of Ophthalmology, Oslo University Hospital, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway. Electronic address: olav.kristianslund@gmail.com.
[Ti] Título:Late In-the-Bag Intraocular Lens Dislocation: A Randomized Clinical Trial Comparing Lens Repositioning and Lens Exchange.
[So] Source:Ophthalmology;124(2):151-159, 2017 Feb.
[Is] ISSN:1549-4713
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To compare the efficacy and safety of 2 operation methods for late in-the-bag intraocular lens (IOL) dislocation. DESIGN: Prospective, randomized, parallel-group surgical trial. PARTICIPANTS: Patients referred to Oslo University Hospital (tertiary referral center). METHODS: We randomly assigned 104 patients (104 eyes) either to IOL repositioning by scleral suturing (n = 54) or to IOL exchange with retropupillary fixation of an iris-claw IOL (n = 50). One surgeon performed all operations. Patients were evaluated comprehensively before surgery, and most patients (82%) attended an examination 6 months after surgery. MAIN OUTCOME MEASURES: Best-corrected visual acuity (BCVA) 6 months after surgery. RESULTS: The mean postoperative BCVA was 0.24±0.29 logarithm of the minimum angle of resolution (logMAR) units (range, -0.18 to 1.16 logMAR) in the repositioning group and 0.35±0.54 logMAR (range, -0.20 to 3.0 logMAR) in the exchange group (P = 0.23). A BCVA of 20/40 or better (Snellen) was reached by 61% and 62% of the patients, respectively (P = 0.99). The mean postoperative corneal cylinder was 1.2±1.0 and 1.2±0.8 diopters, respectively (P = 0.84), and the postoperative endothelial cell density changes were -3±10% (P = 0.07) and -10±14% (P = 0.001), respectively (group difference, P = 0.04). Repositioning had a longer mean surgical time than exchange (P < 0.001). There were 2 (4%) and 0 cases of perioperative fluid misdirection syndrome, respectively. Postoperative complications were intraocular pressure (IOP) increase (n = 12), cystoid macular edema (CME; n = 3), and nonarteritic anterior ischemic optic neuropathy (n = 1) in the repositioning group, and IOP increase (n = 9), pupillary block (n = 1), choroidal effusion (n = 2), CME (n = 4), and redislocation (n = 1) in the exchange group. CONCLUSIONS: We found satisfactory and not significantly different outcomes for BCVA 6 months after surgery in the 2 groups. Both operation methods seemed safe, with low frequencies of serious perioperative and postoperative complications. However, some of the observed differences in complications should be taken into consideration when selecting the most suitable method in clinical practice.
[Mh] Termos MeSH primário: Migração do Implante de Lente Intraocular/cirurgia
Implante de Lente Intraocular/métodos
Lentes Intraoculares
[Mh] Termos MeSH secundário: Idoso
Idoso de 80 Anos ou mais
Contagem de Células
Células Endoteliais/citologia
Feminino
Seres Humanos
Iris/cirurgia
Cristalino/cirurgia
Masculino
Meia-Idade
Estudos Prospectivos
Esclera/cirurgia
Técnicas de Sutura
Acuidade Visual
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170718
[Lr] Data última revisão:
170718
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161205
[St] Status:MEDLINE


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[PMID]:27811568
[Au] Autor:Sorkin N; Einan-Lifshitz A; Ashkenazy Z; Boutin T; Showail M; Borovik A; Alobthani M; Chan CC; Rootman DS
[Ad] Endereço:Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada.
[Ti] Título:Enhancing Descemet Membrane Endothelial Keratoplasty in Postvitrectomy Eyes With the Use of Pars Plana Infusion.
[So] Source:Cornea;36(3):280-283, 2017 Mar.
[Is] ISSN:1536-4798
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To present a modified surgical technique to perform Descemet membrane endothelial keratoplasty (DMEK) in previously vitrectomized eyes and to analyze its safety and efficacy. METHODS: A retrospective analysis of previously vitrectomized eyes that underwent DMEK at Toronto Western Hospital was performed. The modified DMEK technique that was used included placement of a posterior pars plana infusion to reduce fluctuations in the anterior chamber depth and its excessive deepening. RESULTS: Twelve eyes of 12 patients (5 females and 7 males) aged 65.3 ± 21.5 years were included. Mean best-corrected visual acuity improved significantly from 1.72 ± 0.62 logMAR (mean Snellen ∼20/1040) preoperatively to 1.01 ± 0.64 logMAR (mean Snellen ∼20/200) at 6 months postoperatively (P = 0.017). Mean donor endothelial cell density was 2658 ± 229 cells/mm preoperatively and 1732 ± 454 cells/mm at 6 months after the procedure (mean percentage cell loss of 31.8%) (P = 0.046). There were no significant intraoperative complications, and no graft failures. One eye had graft detachment, which resolved after 2 rebubbling procedures. One eye had retinal detachment, which was corrected surgically. CONCLUSIONS: The use of posterior pars plana infusion in previously vitrectomized eyes stabilizes the anterior segment during DMEK, allowing for performance of DMEK surgery, and can potentially reduce intraoperative and postoperative complications.
[Mh] Termos MeSH primário: Acetatos/administração & dosagem
Câmara Anterior/efeitos dos fármacos
Doenças da Córnea/cirurgia
Ceratoplastia Endotelial com Remoção da Lâmina Limitante Posterior/métodos
Minerais/administração & dosagem
Cloreto de Sódio/administração & dosagem
Vitrectomia
[Mh] Termos MeSH secundário: Idoso
Migração do Implante de Lente Intraocular/cirurgia
Contagem de Células
Doenças da Córnea/fisiopatologia
Perda de Células Endoteliais da Córnea/fisiopatologia
Combinação de Medicamentos
Epitélio Posterior/patologia
Ferimentos Oculares Penetrantes/cirurgia
Feminino
Sobrevivência de Enxerto/fisiologia
Seres Humanos
Infusões Parenterais
Complicações Intraoperatórias
Masculino
Descolamento Retiniano/cirurgia
Estudos Retrospectivos
Decúbito Dorsal
Acuidade Visual/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Acetates); 0 (BSS solution); 0 (Drug Combinations); 0 (Minerals); 451W47IQ8X (Sodium Chloride)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161105
[St] Status:MEDLINE
[do] DOI:10.1097/ICO.0000000000001072


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[PMID]:27421176
[Au] Autor:Chang PY; Lian CY; Wang JK; Su PY; Wang JY; Chang SW
[Ad] Endereço:Department of Ophthalmology, Far Eastern Memorial Hospital, Ban-Chiao, New Taipei, Taiwan; Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan.
[Ti] Título:Surgical approach affects intraocular lens decentration.
[So] Source:J Formos Med Assoc;116(3):177-184, 2017 Mar.
[Is] ISSN:0929-6646
[Cp] País de publicação:Singapore
[La] Idioma:eng
[Ab] Resumo:BACKGROUND/PURPOSE: This study aims to quantify and identify risk factors for intraocular lens (IOL) tilt and decentration early after surgery using Scheimpflug imaging. METHODS: We prospectively included 268 eyes of 253 patients who underwent uneventful cataract surgery and one-piece IOL implantation using a superior or temporal approach. Scheimpflug imaging was used to evaluate the tilt and decentration of IOLs at 1 week, 1 month, and 3 months postoperatively. Differences in IOL tilt and decentration between the approaches were examined. Correlations of age and axial length with the magnitudes of IOL decentration and tilt were also examined. RESULTS: In total, 139 right and 129 left eyes were included. IOL displacement averaged 150 µm upward and 150 µm to the nasal side of the pupil. Over 50% of the eyes were tilted upward and approximately 90% to the temporal side. The surgical approach was significantly associated with horizontal decentration in both eyes, but significantly associated with only vertical decentration in the right eye 1 week postoperatively. In the left eyes, IOLs were shifted to the nasal side in 57.1% and 36.8% of the eyes that received the temporal and the superior approach, respectively, compared with 75.8% and 50% in the right eyes. The differences were significant only at 1-week follow-up (p = 0.035 and p = 0.003, respectively). Age or axial length was not associated with IOL tilt or decentration in either eye. CONCLUSION: Scheimpflug imaging can be used as a quantitative tool to evaluate IOL position. The incision site affected the IOL position, this finding was significant at 1 week postoperatively only.
[Mh] Termos MeSH primário: Migração do Implante de Lente Intraocular/diagnóstico por imagem
Lentes Intraoculares
Facoemulsificação/métodos
[Mh] Termos MeSH secundário: Idoso
Feminino
Seres Humanos
Masculino
Meia-Idade
Análise Multivariada
Fotografia
Complicações Pós-Operatórias/diagnóstico por imagem
Estudos Prospectivos
Análise de Regressão
Fatores de Risco
Taiwan
Acuidade Visual/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170816
[Lr] Data última revisão:
170816
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160717
[St] Status:MEDLINE


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[PMID]:27338117
[Au] Autor:Faria MY; Ferreira NP; Canastro M
[Ad] Endereço:Department of Ophthalmology, Hospital Santa Maria, Lisbon - Portugal.
[Ti] Título:Management of dislocated intraocular lenses with iris suture.
[So] Source:Eur J Ophthalmol;27(1):45-48, 2017 Jan 19.
[Is] ISSN:1724-6016
[Cp] País de publicação:Italy
[La] Idioma:eng
[Ab] Resumo:PURPOSE: Subluxated or malpositioned intraocular lenses (IOLs) and inadequate capsular support is a challenge for every ophthalmic surgeon. Iris suture of an IOL seems to be an easy technique for the management of dislocated 3-piece IOL, allowing the IOL to be placed behind the iris, far from the trabecular meshwork and corneal endothelium. The purpose of this study is to assess the results of pars plana vitrectomy (PPV) and iris suture of dislocated 3-piece acrylic IOLs. METHODS: In this retrospective, nonrandomized, interventional case consecutive study, of a total of 103 dislocated IOLs, 36 eyes were considered for analysis. All 36 eyes had subluxated or totally luxated 3-piece IOL and underwent iris suture at the Ophthalmology Department of Santa Maria Hospital-North Lisbon Hospital Center, Portugal, from January 2011 until November 2015. All patients underwent 3-port 23-G PPV. The optic zone of the dislocated IOL was placed anterior to the iris with the haptics behind, in the posterior chamber. Haptics were sutured to iris followed by placement of the optics behind iris plane. Postoperative measures included best-corrected visual acuity (BCVA), IOL position, intraocular pressure, pigment dispersion, clinical signs of endothelial cell loss, and development of macular edema. RESULTS: A total of 36 eyes of 36 patients were included. All underwent successful iris fixation of dislocated 3-piece IOL. Mean overall follow-up was 15.9 months (range 3-58 months). At presentation, 16 eyes (44.4%) had a luxated IOL and 20 eyes (55.6%) a subluxated IOL. As underlying cause, 17 eyes (47.2%) had a history of complicated cataract surgery, 5 eyes (13.9%) had a traumatic dislocation of the IOL, and 6 eyes (16.7%) had a previous vitreoretinal surgery. A total of 8 eyes (22.2%) had late spontaneous IOL dislocation after uneventful cataract surgery. The mean preoperative BCVA was 1.09 ± 0.70 logarithm of the minimal angle of resolution (logMAR) units and mean postoperative BCVA was 0.48 ± 0.58 of logMAR units. The mean visual acuity improvement was 4.08 ± 5.33 lines on the logMAR scale. In this study, every IOL was stable at the last follow-up. As late complications, macular edema occurred in 1 patient and retinal detachment occurred in 2 patients. There were no cases of endophthalmitis. CONCLUSIONS: Iris suture fixation of subluxated IOL is a good treatment option for eyes with dislocated IOLs, leading to long-term stability of the IOL. The advantage of this procedure is using the same IOL in a closed eye surgery. No astigmatic difference is expected as no large corneal incision is needed.
[Mh] Termos MeSH primário: Migração do Implante de Lente Intraocular/cirurgia
Iris/cirurgia
Implante de Lente Intraocular
Técnicas de Sutura
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Migração do Implante de Lente Intraocular/etiologia
Extração de Catarata
Epitélio Posterior/cirurgia
Feminino
Seguimentos
Seres Humanos
Lentes Intraoculares
Masculino
Meia-Idade
Polimetil Metacrilato
Portugal
Complicações Pós-Operatórias
Estudos Retrospectivos
Acuidade Visual/fisiologia
Vitrectomia/métodos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
9011-14-7 (Polymethyl Methacrylate)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160625
[St] Status:MEDLINE
[do] DOI:10.5301/ejo.5000823


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[PMID]:27598732
[Au] Autor:Tandogan T; Holzer MP; Choi CY; Auffarth GU; Gerten G; Khoramnia R
[Ti] Título:Material Analysis of Spontaneously Subluxated Iris-Fixated Phakic Intraocular Lenses.
[So] Source:J Refract Surg;32(9):618-25, 2016 Aug 01.
[Is] ISSN:1081-597X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: To conduct a material analysis of spontaneously subluxated iris-fixated phakic intraocular lenses (IOLs) using light and scanning electron microscopy. METHODS: Six explanted Artisan/Verisyse and Artiflex/Veriflex IOLs (Ophtec, Groningen, Netherlands/AMO, Santa Ana, CA) were analyzed in a laboratory using light and scanning electron microscopy. Four of the IOLs had been explanted after spontaneous subluxation leading to a decrease in visual acuity, whereas the remaining two IOLs did not demonstrate signs of disenclavation but had been explanted in the course of planned cataract surgery and thus served as the control in this study. RESULTS: Light microscopy enabled the detection of clear deformations of the fixation arms on one or both haptics of the lens that had subluxated, and scanning electron microscopy revealed micro-cracks in the material. The deformations, which appeared to have been caused by some form of manipulation of the fixation arms, meant that adequate closure of the fixation arms was no longer possible and a reliable fixation in the iris stroma was unattainable. At least three of the lenses had been implanted with the use of an IOL haptic expander for enclavation, which may have contributed to the malformation of the haptics. The two control lenses exhibited no signs of material deformation or subsequent disenclavation. CONCLUSIONS: Deformations of the haptics of iris-fixated phakic IOLs can cause irreversible damage leading to disenclavation and inadequate re-enclavation. In such cases, explantation appears to be the only therapeutic option. It is important to adhere to an appropriate implantation technique to reduce the risk of spontaneous subluxation. [J Refract Surg. 2016;32(9):618-624.].
[Mh] Termos MeSH primário: Migração do Implante de Lente Intraocular/etiologia
Análise de Falha de Equipamento
Iris/cirurgia
Lentes Intraoculares Fácicas
Falha de Prótese
[Mh] Termos MeSH secundário: Adulto
Idoso
Migração do Implante de Lente Intraocular/cirurgia
Materiais Biocompatíveis
Remoção de Dispositivo
Feminino
Seres Humanos
Microscopia Eletrônica de Varredura
Meia-Idade
Miopia/cirurgia
Reoperação
Acuidade Visual/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biocompatible Materials)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170831
[Lr] Data última revisão:
170831
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160907
[St] Status:MEDLINE
[do] DOI:10.3928/1081597X-20160601-01


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[PMID]:27567905
[Au] Autor:Hayashi K; Ogawa S; Manabe SI; Hirata A; Yoshimura K
[Ad] Endereço:Hayashi Eye Hospital, 4-23-35 Hakataekimae, Hakata-Ku, Fukuoka, 812-0011, Japan. hayashi-ken@hayashi.or.jp.
[Ti] Título:Response to: A classification system of intraocular lens dislocation sites under operating microscopy and surgical techniques and outcomes of exchange surgery.
[So] Source:Graefes Arch Clin Exp Ophthalmol;254(12):2489-2491, 2016 Dec.
[Is] ISSN:1435-702X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Mh] Termos MeSH primário: Lentes Intraoculares
Microscopia
[Mh] Termos MeSH secundário: Migração do Implante de Lente Intraocular/cirurgia
Seres Humanos
Implante de Lente Intraocular
Subluxação do Cristalino/cirurgia
Complicações Pós-Operatórias/cirurgia
Reoperação
Acuidade Visual
[Pt] Tipo de publicação:LETTER
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171026
[Lr] Data última revisão:
171026
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160829
[St] Status:MEDLINE



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