{"id":8342,"date":"2023-07-19T14:49:21","date_gmt":"2023-07-19T17:49:21","guid":{"rendered":"https:\/\/cloveonline.com\/?p=8342"},"modified":"2025-09-03T16:33:18","modified_gmt":"2025-09-03T19:33:18","slug":"membranas-pupilares-persistentes-2","status":"publish","type":"post","link":"https:\/\/cloveonline.com\/?p=8342&lang=pt","title":{"rendered":"Membranas Pupilares Persistentes"},"content":{"rendered":"

O que s\u00e3o Membranas Pupilares Persistentes?<\/h4>\n

A persist\u00eancia das membranas pupilares, tamb\u00e9m conhecida como anomalia de Peter, \u00e9 resultado da involu\u00e7\u00e3o incompleta de uma rede vascular que recobre o cristalino durante sua forma\u00e7\u00e3o nas fases embriol\u00f3gica e fetal. Como resultado, podemos ver pequenas fibras pigmentadas, da mesma cor da \u00edris, que se originam na \u00edris e podem terminar de tr\u00eas maneiras diferentes. Eles podem terminar na pr\u00f3pria \u00edris e ent\u00e3o parecer pequenas pontes sobre a \u00edris. Em segundo lugar, eles podem acabar presos ao interior da c\u00f3rnea (endot\u00e9lio da c\u00f3rnea) e isso causa opacidades esbranqui\u00e7adas na c\u00f3rnea chamadas leucomas. Por \u00faltimo, temos aquelas que aderem \u00e0 parte superficial da lente (c\u00e1psula anterior) e tamb\u00e9m causam opacidades esbranqui\u00e7adas, que neste caso s\u00e3o chamadas de cataratas capsulares anteriores.<\/p>\n

Como s\u00e3o diagnosticados?<\/h4>\n

Para o diagn\u00f3stico adequado das membranas pupilares persistentes, o oftalmologista veterin\u00e1rio deve realizar uma avalia\u00e7\u00e3o oftalmol\u00f3gica completa do paciente e com o uso de uma l\u00e2mpada de fenda (microsc\u00f3pio especial para avalia\u00e7\u00e3o do segmento anterior do olho) determinar\u00e1 a presen\u00e7a das membranas e quais estruturas do olho est\u00e3o afetando.<\/p>\n

Como s\u00e3o tratadas as Membranas Pupilares Persistentes?<\/h4>\n

Estas membranas n\u00e3o t\u00eam nenhum tratamento como tal. Se necess\u00e1rio, o que pode ser tratado \u00e9 a consequ\u00eancia, caso gere um problema visual importante. As opacidades da c\u00f3rnea, se cobrirem grande parte da c\u00f3rnea, s\u00f3 podem ser corrigidas com um transplante de c\u00f3rnea. No caso das cataratas, se forem m\u00faltiplas ou extensas, a solu\u00e7\u00e3o seria a cirurgia de catarata com coloca\u00e7\u00e3o de lente intraocular.<\/p>\n

Qual \u00e9 o progn\u00f3stico para um paciente com Membranas Pupilares Persistentes?<\/h4>\n

O progn\u00f3stico \u00e9 geralmente favor\u00e1vel e \u00e9 apenas um achado incidental. Se o paciente necessitar de cirurgia de catarata, atualmente o progn\u00f3stico tamb\u00e9m \u00e9 bom (veja o artigo sobre catarata). Se houver uma condi\u00e7\u00e3o extensa da c\u00f3rnea e precisar de um transplante de c\u00f3rnea, j\u00e1 \u00e9 uma cirurgia mais complexa e o oftalmologista veterin\u00e1rio deve analisar e discutir com voc\u00ea as vantagens e desvantagens com base em cada caso.<\/p>\n

Figuras:<\/h4>\n
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Fig. 1 Membrana Pupilar Persistente \u00danica (PPM) de \u00edris a \u00edris. Observe tamb\u00e9m a opacidade do cristalino (catarata) n\u00e3o associada ao PPM.<\/figcaption><\/figure>\n<\/div><\/div>\n
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Fig. 2 M\u00faltiplos MPPs e um pequeno ponto de opacidade da c\u00f3rnea.<\/figcaption><\/figure>\n<\/div><\/div>\n
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Fig. 3 M\u00faltiplos MPPs e extensa \u00e1rea de opacidade corneana.<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n
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Fig. 4 M\u00faltiplos MPPs e extensa \u00e1rea de opacidade da c\u00f3rnea, vista lateral.<\/figcaption><\/figure>\n<\/div><\/div>\n
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Fig. 5 M\u00faltiplos MPPs e uma pequena opacidade na lente capsular anterior (catarata capsular anterior).<\/figcaption><\/figure>\n<\/div><\/div>\n
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Fig. 6 M\u00faltiplos MPPs e grande opacidade na lente capsular anterior (catarata capsular anterior).<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

O que s\u00e3o Membranas Pupilares Persistentes? A persist\u00eancia das membranas pupilares, tamb\u00e9m conhecida como anomalia de Peter, \u00e9 resultado da involu\u00e7\u00e3o incompleta de uma rede vascular que recobre o cristalino durante sua forma\u00e7\u00e3o nas fases embriol\u00f3gica e fetal. Como resultado, podemos ver pequenas fibras pigmentadas, da mesma cor da \u00edris, que se originam na \u00edris […]\n","protected":false},"author":1,"featured_media":8345,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-8342","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sem-categoria"],"yoast_head":"\nMembranas Pupilares Persistentes - CLOVE<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cloveonline.com\/?p=8342&lang=pt\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Membranas Pupilares Persistentes - CLOVE\" \/>\n<meta property=\"og:description\" content=\"O que s\u00e3o Membranas Pupilares Persistentes? A persist\u00eancia das membranas pupilares, tamb\u00e9m conhecida como anomalia de Peter, \u00e9 resultado da involu\u00e7\u00e3o incompleta de uma rede vascular que recobre o cristalino durante sua forma\u00e7\u00e3o nas fases embriol\u00f3gica e fetal. 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