INTACS inserts for treating keratoconus

Colin, Joseph; Cochener, Béatrice; Savary, Gwenaelle; Malet, Florence; Holmes-Higgin, Debby

doi:10.1016/s0161-6420(01)00646-7

Cited by 248 publications

(178 citation statements)

References 18 publications

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“…Na tentativa de prevenir ou adiar o transplante de córnea, o implante de anel intracorneano tem sido uma opção na correção cirúrgica do ceratocone, uma vez que se trata de procedimento menos invasivo (por ser extra-ocular), reversível e ajustável (10)(11)(12) .…”

Section: Discussionunclassified

“…No entanto, comparando-se a melhora da média da acuidade visual entre três e doze meses, verificou-se que não houve diferença estatística significativa (p=0,247), sugerindo que após três meses de cirurgia já haja estabilização dos resultados. Estudos realizados em 2001 (11) com o uso do INTACS para a correção do ceratocone demonstraram, após um ano de seguimento, melhora significativa da acuidade visual sem correção de 1,05 unidades de LogMAR (± 0,33) para 0,35 unidades de LogMAR (± 0,16). Nestes estudos, a média da acuidade visual corrigida melhorou de 0,38 unidades de LogMAR para 0,22 unidades de LogMAR.…”

Section: Discussionunclassified

“…Nestes estudos, a média da acuidade visual corrigida melhorou de 0,38 unidades de LogMAR para 0,22 unidades de LogMAR. Os resultados da acuidade visual sem correção obtidos em nossos estudos apresentaram-se inferiores quando comparados com esses resultados (11) . No entanto, a média da acuidade visual corrigida após 12 meses (0,264 unidades de LogMAR) foi muito próxima à descrita por este autor que foi de 0,22 unidades de LogMAR.…”

Section: Discussionunclassified

“…Trabalhos anteriores (11) demonstraram aplanamento corneano em todos os casos estudados com média de aproximadamente quatro dioptrias, muito próxima à encontrada neste estudo, que foi de 4,4 dioptrias.…”

Section: Discussionunclassified

“…Este mesmo efeito pode ser observado em olhos portadores de astigmatismo irregular devido a ceratocone, levando à melhora da acuidade visual (10)(11) .…”

Section: Introductionunclassified

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Análise de nova técnica para o implante do anel de Ferrara no ceratocone

Oliveira

Moreira

Wahab

et al. 2004

Arq. Bras. Oftalmol.

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Section: Discussionunclassified

“…Este mesmo efeito pode ser observado em olhos portadores de astigmatismo irregular devido a ceratocone, levando à melhora da acuidade visual (10)(11) .…”

Section: Introductionunclassified

See 3 more Smart Citations

Análise de nova técnica para o implante do anel de Ferrara no ceratocone

Oliveira

Moreira

Wahab

et al. 2004

Arq. Bras. Oftalmol.

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Management of Post-LASIK Corneal Ectasia With Intacs Inserts

Kymionis

Siganos²,

Kounis³

et al. 2003

Arch Ophthalmol

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To prospectively study the effects of the use of Intacs microthin prescription inserts (Addition Technology Inc, Fremont, Calif) for the postoperative management of corneal ectasia resulting from laser in situ keratomileusis (LASIK). Methods: In this prospective nonrandomized clinical trial, 10 eyes of 7 patients with post-LASIK corneal ectasia (2 men and 5 women) aged 33 to 46 years (mean±SD, 40.67 ± 5.99 years) were included. The follow-up ranged from 6 to 24 months (mean±SD, 15.0±6.5 months). Two Intacs segments of thickness depending on the residual refraction of the patients were inserted in each eye. Main Outcome Measures: Uncorrected visual acuity, best spectacle-corrected visual acuity, refractive outcome, and topographic findings after Intacs implantation. Results: Intacs were successfully implanted in all eyes. Spherical equivalent error was statistically significantly reduced after Intacs implantation (pre-Intacs, mean±SD: −4.81±3.24 Diopters (D) (range, −13.75 to −2.50 D) to −0.96±2.93 D (range, −8.75 to 2.50 D) (PϽ.001). Pre-Intacs uncorrected visual acuity was 20/100 or worse in all eyes (range, counting fingers to 20/100) while at the last follow-up examination, 9 (90%) of 10 eyes had uncorrected visual acuity of 20/40 or better (range, counting fingers to 20/20). Three eyes maintained the pre-Intacs best spectacle-corrected visual acuity while the rest of the eyes (7) experienced a gain of 1 to 2 lines. The mean difference between pre-Intacs and last follow-up best spectacle-corrected visual acuity was a gain of 1.00±0.82 lines. Conclusions: Intracorneal ring segments implantation improved uncorrected visual acuity and best spectaclecorrected visual acuity in patients with post-LASIK ectasia. Even though the results are encouraging, concern still exists regarding the long-term effect of such an approach for the management of post-LASIK ectasia.

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Keratoconus Managed With Intacs

Levinger¹

2005

Arch Ophthalmol

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To describe the visual outcome of keratoconus managed with Intacs implantation (Addition Technology Inc, Fremont, Calif) and to define criteria that predict good outcome.Methods: This retrospective, nonrandomized, comparative, consecutive case series studied 58 eyes of 43 patients with keratoconus managed by Intacs implantation. The outcome measures were analyzed pre-Intacs and 1 year post-Intacs. Preoperative parameters were correlated with outcome.Main Outcome Measures: Uncorrected visual acuity (UCVA), best spectacle-corrected visual acuity (BSCVA), manifest refraction, videokeratography, and patient questionnaires.Results: Intacs were implanted in all eyes with no in-traoperative complications. Six eyes underwent additional Intacs surgery. Post-Intacs, the mean±SD UCVA improved from less than 20/200 ± 0.1 line to 20/ 50 −3 ±3.1 lines, the mean±SD BSCVA was unchanged at 20/32±2.0 lines, the mean±SD spherical equivalent improved from −3.88±1.64 to −1.04±1.51 diopters (D), and the mean±SD astigmatism improved from 3.34±2.23 to 1.97 ± 1.51 D. Twenty-five eyes had a good outcome (UCVAՆ20/40). Multiple regression selected BSCVA, astigmatism, and spherical myopia as the preoperative predictors of outcome.Conclusions: Intacs improve myopia and regular astigmatism in keratoconus. Milder keratoconus (BSCVAϾ20/ 32 −2 and astigmatismϽ3.50 D) and significant spherical myopia (Ͼ−1.75) predict better outcome.

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INTACS inserts for treating keratoconus

Cited by 248 publications

References 18 publications

Análise de nova técnica para o implante do anel de Ferrara no ceratocone

Análise de nova técnica para o implante do anel de Ferrara no ceratocone

Management of Post-LASIK Corneal Ectasia With Intacs Inserts

Keratoconus Managed With Intacs

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