{"id":49272,"date":"2025-02-25T14:26:09","date_gmt":"2025-02-25T14:26:09","guid":{"rendered":"https:\/\/www.elza-institute.com\/?p=45371"},"modified":"2025-02-25T14:26:09","modified_gmt":"2025-02-25T14:26:09","slug":"understanding-icrs-and-femto-cairs-a-simple-guide","status":"publish","type":"post","link":"https:\/\/www.elza-institute.com\/pt\/understanding-icrs-and-femto-cairs-a-simple-guide\/","title":{"rendered":"Compreender os segmentos do anel intracorneano (ICRS) e os Femto-CAIRS"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"49272\" class=\"elementor elementor-49272\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3f1c40be e-flex e-con-boxed e-con e-parent\" data-id=\"3f1c40be\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-69f64924 elementor-widget elementor-widget-text-editor\" data-id=\"69f64924\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><strong>Introdu\u00e7\u00e3o - An\u00e9is de Keraring, MyoRing e Ferrara<\/strong><\/h3><p>O primeiro passo para compreender o que s\u00e3o os an\u00e9is Keraring, MyoRing e Ferrara Rings \u00e9 compreender a sua indica\u00e7\u00e3o: reabilitar a vis\u00e3o em ectasias da c\u00f3rnea (particularmente o ceratocone). O ceratocone e outras ectasias relacionadas, como a degeneresc\u00eancia marginal pel\u00facida e o queratoglobo, s\u00e3o doen\u00e7as progressivas que enfraquecem a c\u00f3rnea, fazendo com que esta se torne mais fina e abaulada, assumindo uma forma irregular. Esta distor\u00e7\u00e3o leva a problemas de vis\u00e3o, incluindo vis\u00e3o desfocada ou distorcida, aumento da sensibilidade \u00e0 luz e dificuldades na vis\u00e3o nocturna. Em casos avan\u00e7ados, a cicatriza\u00e7\u00e3o da c\u00f3rnea pode reduzir ainda mais a acuidade visual, tornando as actividades di\u00e1rias dif\u00edceis. Para restaurar a vis\u00e3o, existem v\u00e1rias op\u00e7\u00f5es de tratamento, desde lentes de contacto r\u00edgidas a transplantes de c\u00f3rnea e segmentos de anel intracorneano (ICRS). No entanto, as t\u00e9cnicas modernas de implante da c\u00f3rnea e os procedimentos assistidos por femtosegundo proporcionam alternativas menos invasivas e altamente eficazes para muitos doentes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3e59bc4 e-flex e-con-boxed e-con e-parent\" data-id=\"3e59bc4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c7c7aa8 elementor-widget elementor-widget-text-editor\" data-id=\"c7c7aa8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><strong>1. O que s\u00e3o os segmentos do anel intracorneano (ICRS)?<\/strong><\/h3><p>ICRS, como o <strong>Keraring, Anel de Ferrara,<\/strong> e <strong>MyoRing,<\/strong> s\u00e3o pequenos implantes inseridos na c\u00f3rnea para a remodelar e melhorar a vis\u00e3o. Estes segmentos de anel s\u00e3o particularmente \u00fateis para doentes com ceratocone ou outras irregularidades da c\u00f3rnea, uma vez que ajudam a reduzir o astigmatismo irregular (curvatura irregular da c\u00f3rnea) e a melhorar a forma geral da c\u00f3rnea.<\/p><p>A principal vantagem dos ICRS \u00e9 o facto de oferecerem uma alternativa menos invasiva e revers\u00edvel ao transplante de c\u00f3rnea. Em vez de substituir a c\u00f3rnea, estes implantes modificam a sua forma, permitindo aos pacientes manter o seu tecido corneano natural enquanto melhoram a sua vis\u00e3o.<\/p><p>Os ICRS actuam como espa\u00e7adores dentro das camadas da c\u00f3rnea. A c\u00f3rnea \u00e9 constitu\u00edda por um tecido duro e transparente que cont\u00e9m fibras de colag\u00e9nio que mant\u00eam a sua estrutura. Quando os ICRS s\u00e3o inseridos no estroma perif\u00e9rico da c\u00f3rnea (a camada interm\u00e9dia da c\u00f3rnea), criam espa\u00e7o e alteram a forma da c\u00f3rnea. Este processo \u00e9 conhecido como o efeito de encurtamento do arco, o que significa que a c\u00f3rnea se torna menos inclinada no centro. Uma c\u00f3rnea mais \u00edngreme distorce a vis\u00e3o, pelo que o seu achatamento leva a uma vis\u00e3o mais clara.<\/p><p>O grau de achatamento obtido depende de dois factores:<\/p><ol start=\"1\" data-spread=\"false\"><li><strong>Espessura do segmento implantado<\/strong> - Os segmentos de anel mais espessos aplicam mais for\u00e7a ao tecido da c\u00f3rnea, resultando num maior achatamento.<\/li><li><strong>Di\u00e2metro do local de implanta\u00e7\u00e3o<\/strong> - Se os an\u00e9is forem colocados mais perto do centro, o efeito \u00e9 mais forte; se forem colocados mais afastados, o efeito \u00e9 mais suave.<\/li><\/ol><p>Em termos simples, estes segmentos de anel pressionam suavemente a c\u00f3rnea a partir do interior, remodelando-a para uma forma de c\u00fapula mais regular. Isto ajuda a reduzir o efeito de abaulamento observado no ceratocone e melhora a vis\u00e3o ao tornar a superf\u00edcie da c\u00f3rnea mais uniforme.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b4cda73 e-flex e-con-boxed e-con e-parent\" data-id=\"b4cda73\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d2f5ca1 elementor-widget elementor-widget-text-editor\" data-id=\"d2f5ca1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><strong>2.\u00a0<\/strong><strong>ICRS:\u00a0<\/strong><strong>Keraring vs. Ferrara Ring vs. MyoRing - Qual \u00e9 a diferen\u00e7a?<\/strong><\/h3><p>Embora as tr\u00eas op\u00e7\u00f5es sirvam o mesmo objetivo geral, diferem na sua conce\u00e7\u00e3o e aplica\u00e7\u00e3o:<\/p><ul data-spread=\"true\"><li><a href=\"https:\/\/uk.haag-streit.com\/products\/categories\/surgical\/trusted-surgical-brands\/keraring\"><strong>Keraring<\/strong><\/a>: Fabricados em polimetilmetacrilato (PMMA), um material biocompat\u00edvel, os segmentos Keraring s\u00e3o concebidos com uma sec\u00e7\u00e3o transversal triangular e est\u00e3o dispon\u00edveis em v\u00e1rios comprimentos e espessuras de arco. S\u00e3o normalmente utilizados em casos moderados de ceratocone para proporcionar um aplanamento controlado da c\u00f3rnea e melhorar a qualidade da vis\u00e3o.<\/li><li><a href=\"https:\/\/ferrararing.com.br\/en\/\"><strong>Anel de Ferrara<\/strong><\/a>: Semelhante ao Keraring, o Ferrara Ring tamb\u00e9m \u00e9 feito de PMMA e apresenta uma sec\u00e7\u00e3o transversal triangular. No entanto, oferece diferentes di\u00e2metros de zona \u00f3tica e comprimentos de arco, permitindo a personaliza\u00e7\u00e3o com base na topografia corneana espec\u00edfica do doente. Este desenho \u00e9 frequentemente utilizado em casos de ceratocone mais avan\u00e7ados, em que \u00e9 necess\u00e1ria uma abordagem personalizada para obter a remodela\u00e7\u00e3o desejada da c\u00f3rnea.<\/li><li><a href=\"https:\/\/www.dioptex.com\/en\/products\/myoring.html\"><strong>MyoRing<\/strong><\/a>: Ao contr\u00e1rio dos designs segmentados do Keraring e do Ferrara Ring, o MyoRing \u00e9 um anel cont\u00ednuo e completo implantado numa bolsa corneana criada no interior do estroma. Este desenho de anel completo proporciona um suporte uniforme \u00e0 c\u00f3rnea, tornando-o adequado para casos graves de ceratocone em que \u00e9 necess\u00e1ria uma estabilidade adicional da c\u00f3rnea. A implanta\u00e7\u00e3o do MyoRing pode reduzir efetivamente a inclina\u00e7\u00e3o da c\u00f3rnea e melhorar a acuidade visual, oferecendo uma alternativa vi\u00e1vel a procedimentos mais invasivos.<\/li><\/ul><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e6c114a elementor-widget elementor-widget-image\" data-id=\"e6c114a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.elza-institute.com\/wp-content\/uploads\/2025\/02\/ICRS-rings.png\" title=\"\" alt=\"\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">O tamanho e a forma dos implantes pl\u00e1sticos Keraring, Ferrara Ring e MyoRing<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d1ed553 e-flex e-con-boxed e-con e-parent\" data-id=\"d1ed553\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c7205d8 elementor-widget elementor-widget-text-editor\" data-id=\"c7205d8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><strong>3. Femto-CAIRS: Uma nova abordagem<\/strong><\/h3><p><a href=\"https:\/\/www.elza-institute.com\/pt\/femto-cairs-asymmetric-femtosecond-laser-cut-corneal-segments-in-keratoconus-treatment-a-new-surgical-approach\/\">Femto-CAIRS<\/a>\u00a0(Femtosecond Laser-Assisted Corneal Allogenic Intrastromal Ring Segments) representa o mais recente avan\u00e7o nos implantes da c\u00f3rnea, oferecendo vantagens significativas em rela\u00e7\u00e3o aos ICRS sint\u00e9ticos tradicionais. Em vez de utilizar segmentos de pl\u00e1stico artificial, o Femto-CAIRS utiliza tecido corneano de um dador humano (tecido alog\u00e9nico). Este material biologicamente compat\u00edvel integra-se naturalmente no olho do paciente, reduzindo o risco de complica\u00e7\u00f5es como migra\u00e7\u00e3o, extrus\u00e3o ou rejei\u00e7\u00e3o.<\/p><p>Um dos principais factores de diferencia\u00e7\u00e3o do Femto-CAIRS \u00e9 a utiliza\u00e7\u00e3o de um laser de femtosegundo altamente preciso, que assegura a coloca\u00e7\u00e3o meticulosa dos segmentos alog\u00e9nicos. Esta tecnologia avan\u00e7ada permite a personaliza\u00e7\u00e3o tanto da profundidade como do posicionamento, optimizando a remodela\u00e7\u00e3o da c\u00f3rnea e maximizando os resultados visuais. Estudos demonstraram que o Femto-CAIRS aplana efetivamente a c\u00f3rnea central, reduz o astigmatismo irregular e proporciona uma estabilidade mais duradoura em compara\u00e7\u00e3o com as alternativas sint\u00e9ticas.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e0e75c0 e-flex e-con-boxed e-con e-parent\" data-id=\"e0e75c0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c061bf4 elementor-widget elementor-widget-video\" data-id=\"c061bf4\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;vimeo&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<iframe class=\"elementor-video-iframe\" allowfullscreen allow=\"clipboard-write\" title=\"Leitor de v\u00eddeo vimeo\" src=\"https:\/\/player.vimeo.com\/video\/1047757490?color&amp;autopause=0&amp;loop=0&amp;muted=0&amp;title=1&amp;portrait=1&amp;byline=1&amp;h=f0123a0d5f#t=\"><\/iframe>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fd11629 e-flex e-con-boxed e-con e-parent\" data-id=\"fd11629\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d5349ab elementor-widget elementor-widget-text-editor\" data-id=\"d5349ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><strong>4. Quem pode beneficiar?<\/strong><\/h3><p>Os procedimentos Femto-CAIRS e ICRS tradicional s\u00e3o mais ben\u00e9ficos para os doentes com ceratocone ligeiro a moderado que ainda t\u00eam uma c\u00f3rnea suficientemente espessa para suportar estes implantes.<\/p><p>Os doentes que apresentam uma distor\u00e7\u00e3o significativa da vis\u00e3o devido \u00e0 ectasia da c\u00f3rnea, mas que ainda n\u00e3o se encontram na fase de necessidade de um transplante de c\u00f3rnea, s\u00e3o os candidatos ideais. Os doentes com casos graves, em que a espessura da c\u00f3rnea est\u00e1 demasiado comprometida, podem ainda necessitar de interven\u00e7\u00f5es cir\u00fargicas mais avan\u00e7adas, como a queratoplastia lamelar anterior profunda (DALK) ou a queratoplastia penetrante (PKP). Em caso de cicatrizes, a queratectomia fototerap\u00eautica (PTK), em que \u00e9 utilizado um excimer laser para remover o tecido cicatricial da c\u00f3rnea,\u00a0<a href=\"https:\/\/www.elza-institute.com\/pt\/corneal-surgery\/poor-vision-corneal-scars\/\">pode tamb\u00e9m ser uma op\u00e7\u00e3o de tratamento<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3a43083 e-flex e-con-boxed e-con e-parent\" data-id=\"3a43083\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a25e7ad elementor-widget elementor-widget-text-editor\" data-id=\"a25e7ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><strong>Conclus\u00e3o<\/strong><\/h3><p>Para indiv\u00edduos que sofrem de ceratocone e outras ectasias da c\u00f3rnea, os implantes da c\u00f3rnea como o Keraring, o Ferrara Ring e o MyoRing oferecem op\u00e7\u00f5es de tratamento valiosas. No entanto, o aparecimento do Femto-CAIRS redefiniu o que \u00e9 poss\u00edvel na reabilita\u00e7\u00e3o da vis\u00e3o, proporcionando uma alternativa superior que combina a compatibilidade biol\u00f3gica com a precis\u00e3o do laser de femtosegundo de \u00faltima gera\u00e7\u00e3o.<\/p><p>Consultar um oftalmologista experiente \u00e9 crucial para determinar o tratamento mais adequado para cada paciente. No Instituto ELZA, os especialistas em ceratocone e ectasia corneana oferecem solu\u00e7\u00f5es personalizadas, incluindo as \u00faltimas inova\u00e7\u00f5es em implantes corneanos e Femto-CAIRS, garantindo os melhores resultados visuais poss\u00edveis para cada paciente.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Os segmentos de anel intracorneano (ICRS) podem oferecer efeitos significativos de aplana\u00e7\u00e3o da c\u00f3rnea e de reabilita\u00e7\u00e3o da vis\u00e3o em c\u00f3rneas adequadas. Este artigo explora as diferen\u00e7as entre os diferentes segmentos de anel e os \u00faltimos avan\u00e7os em ICRS, como o Femto-CAIRS.<\/p>","protected":false},"author":4,"featured_media":49202,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[214,1126],"tags":[926,1120,1121,561,1122,1123,1124,679,683,758,167,1125,578,1025,1127,1128,123,975,1129,1130,1131,861],"class_list":["post-49272","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-farhad-hafezi","category-intrastromal-rings","tag-advanced-keratoconus-surgery","tag-allogenic-corneal-implants","tag-corneal-cross-linking-alternative","tag-corneal-ectasia","tag-corneal-implants","tag-corneal-reshaping","tag-corneal-transplant-alternative","tag-elza-institute","tag-eye-health","tag-femto-cairs","tag-femtosecond-laser","tag-ferrara-ring","tag-icrs","tag-intracorneal-ring-segments","tag-irregular-astigmatism-correction","tag-keraring","tag-keratoconus","tag-keratoconus-treatment","tag-minimally-invasive-eye-surgery","tag-myoring","tag-vision-correction","tag-vision-rehabilitation"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Understanding Intracorneal Ring Segments (ICRS) and Femto-CAIRS<\/title>\n<meta name=\"description\" content=\"Learn about ICRS implants like Keraring, Ferrara Ring, MyoRing, CAIRS and Femto-CAIRS offer cutting-edge solutions for keratoconus treatment.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.elza-institute.com\/pt\/understanding-icrs-and-femto-cairs-a-simple-guide\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Understanding Intracorneal Ring Segments (ICRS) and Femto-CAIRS\" \/>\n<meta property=\"og:description\" content=\"Learn about ICRS implants like Keraring, Ferrara Ring, MyoRing, CAIRS and Femto-CAIRS offer cutting-edge solutions for 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