{"id":3540,"date":"2020-10-28T15:35:03","date_gmt":"2020-10-28T14:35:03","guid":{"rendered":"https:\/\/dev.retina.ch\/?post_type=netzhauterkrankungen&p=3540"},"modified":"2023-04-05T11:44:37","modified_gmt":"2023-04-05T09:44:37","slug":"degradation-du-champ-visuel-central","status":"publish","type":"netzhauterkrankungen","link":"https:\/\/retina.ch\/fr\/degenerescences-retiniennes\/degradation-du-champ-visuel-central\/","title":{"rendered":"D\u00e9gradation du champ visuel central"},"content":{"rendered":"\n

Les d\u00e9g\u00e9n\u00e9rescences maculaires sont la cause la plus fr\u00e9quente de handicap visuel chez les personnes \u00e2g\u00e9es<\/a>. Mais elles peuvent \u00e9galement survenir chez les jeunes, par exemple en cas de maladie de Stargardt<\/a>, de maladie de Best<\/a>, de dystrophie des c\u00f4nes et des b\u00e2tonnets<\/a>, de malattia leventinese<\/a>, etc. Au cours de la maladie, les cellules nerveuses sensibles \u00e0 la lumi\u00e8re (photor\u00e9cepteurs) situ\u00e9es au centre de la r\u00e9tine, appel\u00e9e macula<\/em>, se d\u00e9sint\u00e8grent. Cette tr\u00e8s petite zone (environ 5 % de la surface de la r\u00e9tine) permet la vision la plus nette. Il en r\u00e9sulte une perte du champ visuel central.<\/p>\n\n\n\n

Une perte du champ visuel central entra\u00eene de grandes difficult\u00e9s de lecture et complique la reconnaissance des visages ou des structures fines. Les personnes atteintes de d\u00e9g\u00e9n\u00e9rescence maculaire peuvent toutefois s\u2019orienter et se d\u00e9placer facilement dans l\u2019espace.<\/p>\n\n\n\n

\n
\n
\"Vue
Vision normale<\/figcaption><\/figure>\n<\/div>\n\n\n\n
\n
\"Simulation
Vision avec d\u00e9gradation du champ visuel central<\/figcaption><\/figure>\n<\/div>\n<\/div>\n\n\n\n

Une perte du champ visuel central signifie que les personnes ne reconnaissent plus les choses qu\u2019elles regardent directement. C\u2019est ce qui arrive \u00e0 cette personne au restaurant qui ne peut plus reconna\u00eetre le visage de la serveuse. Les personnes concern\u00e9es doivent apprendre \u00e0 regarder \u00ab\u00e0 c\u00f4t\u00e9 de la cible\u00bb.<\/p>\n\n\n\n

Une personne qui est uniquement capable de percevoir les choses au centre de son champ de vision est atteinte de ce que l\u2019on appelle une d\u00e9gradation du champ visuel p\u00e9riph\u00e9rique<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Une perte du champ visuel central entra\u00eene de grandes difficult\u00e9s de lecture et complique la reconnaissance des visages ou des structures fines. Les personnes atteintes de d\u00e9g\u00e9n\u00e9rescence maculaire peuvent toutefois s\u2019orienter et se d\u00e9placer facilement dans l\u2019espace.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"h5ap_radio_sources":[],"_FSMCFIC_featured_image_caption":"","_FSMCFIC_featured_image_nocaption":"","_FSMCFIC_featured_image_hide":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[53],"class_list":["post-3540","netzhauterkrankungen","type-netzhauterkrankungen","status-publish","hentry","category-symptome"],"acf":[],"yoast_head":"\nD\u00e9gradation du champ visuel central • Retina Suisse<\/title>\n<meta name=\"description\" content=\"Personnes avec une d\u00e9gradation du champ visuel central ont de peine \u00e0 lire, \u00e0 reconna\u00eetre des visages et \u00e0 distinguer des structures fines\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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