{"id":8129,"date":"2016-04-18T15:37:53","date_gmt":"2016-04-18T14:37:53","guid":{"rendered":"https:\/\/www.chu-poitiers.fr\/specialites\/ophtalmologie\/?page_id=8129"},"modified":"2021-06-23T14:52:53","modified_gmt":"2021-06-23T13:52:53","slug":"la-technique-de-surface-pkr","status":"publish","type":"page","link":"https:\/\/www.chu-poitiers.fr\/specialites\/ophtalmologie\/chirurgie-refractive\/la-technique-de-surface-pkr\/","title":{"rendered":"La technique de surface PKR"},"content":{"rendered":"

L\u2019action du laser (la photo-ablation, c\u2019est-\u00e0-dire la sculpture de la corn\u00e9e pour en modifier les rayons de courbure et ainsi corriger le trouble visuel) se fait sur la surface de la corn\u00e9e apr\u00e8s avoir \u00f4t\u00e9 l\u2019\u00e9pith\u00e9lium. Dans le cas de la PKR, l\u2019\u00e9pith\u00e9lium est retir\u00e9 manuellement avec l\u2019aide \u00e9ventuelle d\u2019alcool dilu\u00e9.<\/p>\n

La PKR est la premi\u00e8re technique laser (fin des ann\u00e9es 80) a avoir \u00e9t\u00e9 utilis\u00e9e pour corriger les troubles visuels.<\/p>\n

Cette technique permet de traiter les corn\u00e9es fines et\/ou suspectes. Ainsi leurs indications se nourrissent des contre-indications du Lasik,\u00a0plus confortable pour le patient. Les deux avantages de cette technique sont l\u2019absence de risque li\u00e9 \u00e0 la d\u00e9coupe au cours du Lasik et une photo-ablation superficielle permettant de pr\u00e9server l\u2019\u00e9paisseur de la corn\u00e9e (\u00ab\u00a0lit stromal post\u00e9rieur\u00a0\u00bb). Par contre, les suites op\u00e9ratoires sont plus longues avec une douleur qui peut persister pendant 48 heures apr\u00e8s l\u2019intervention (pose d\u2019une lentille pansement en fin d\u2019intervention qui ne sera retir\u00e9e qu\u2019au troisi\u00e8me jour) et une r\u00e9cup\u00e9ration visuelle n\u2019intervenant que tr\u00e8s rarement avant le quatri\u00e8me jour. Le Lasik est donc, lorsqu\u2019il est possible, pr\u00e9f\u00e9rable pour le confort du patient (g\u00e8ne de quelques heures, r\u00e9cup\u00e9ration en moins de douze\u00a0heures).<\/p>\n

\"Technique<\/a>
L\u2019op\u00e9ration par PKR se r\u00e9alise sous anesth\u00e9sie locale. Elle est INDOLORE. La couche superficielle de la corn\u00e9e (\u00e9pith\u00e9lium) est enlev\u00e9e. Le neuro-tracking est activ\u00e9 compensant les mouvements involontaires des yeux et assurant une grande s\u00e9curit\u00e9. La photo-ablation au laser Excimer est r\u00e9alis\u00e9e en surface, corrigeant ainsi le d\u00e9faut visuel du patient. Une application de mitomycine 0,02% est parfois r\u00e9alis\u00e9e pour limiter la r\u00e9ponse cicatricielle excessive. Une lentille pansement est pos\u00e9e en fin d\u2019intervention pour r\u00e9duire la douleur pr\u00e9sente les trois jours suivants.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

L\u2019action du laser (la photo-ablation, c\u2019est-\u00e0-dire la sculpture de la corn\u00e9e pour en modifier les rayons de courbure et ainsi corriger le trouble visuel) se fait sur la surface de la corn\u00e9e apr\u00e8s avoir \u00f4t\u00e9 l\u2019\u00e9pith\u00e9lium. Dans le cas de la PKR, l\u2019\u00e9pith\u00e9lium est retir\u00e9 manuellement avec l\u2019aide \u00e9ventuelle d\u2019alcool dilu\u00e9. La PKR est la […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":8123,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-8129","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nLa technique de surface PKR - Ophtalmologie<\/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:\/\/www.chu-poitiers.fr\/specialites\/ophtalmologie\/chirurgie-refractive\/la-technique-de-surface-pkr\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La technique de surface PKR - Ophtalmologie\" \/>\n<meta property=\"og:description\" content=\"L\u2019action du laser (la photo-ablation, c\u2019est-\u00e0-dire la sculpture de la corn\u00e9e pour en modifier les rayons de courbure et ainsi corriger le trouble visuel) se fait sur la surface de la corn\u00e9e apr\u00e8s avoir \u00f4t\u00e9 l\u2019\u00e9pith\u00e9lium. Dans le cas de la PKR, l\u2019\u00e9pith\u00e9lium est retir\u00e9 manuellement avec l\u2019aide \u00e9ventuelle d\u2019alcool dilu\u00e9. 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