{"id":8250,"date":"2013-07-24T11:56:23","date_gmt":"2013-07-24T09:56:23","guid":{"rendered":"http:\/\/www.invarena.cz\/?p=8250"},"modified":"2013-07-24T12:02:52","modified_gmt":"2013-07-24T10:02:52","slug":"vedci-zjistili-ze-lze-vyrobit-bezne-nositelne-kontaktni-cocky-se-zoomem","status":"publish","type":"post","link":"https:\/\/www.invarena.cz\/?p=8250","title":{"rendered":"Kontaktn\u00ed \u010do\u010dky se zoomem pomohou lidem se ztr\u00e1tou centr\u00e1ln\u00edho vid\u011bn\u00ed"},"content":{"rendered":"

Mezin\u00e1rodn\u00edmu t\u00fdmu v\u00fdzkumn\u00edk\u016f se poda\u0159ilo vytvo\u0159it prvn\u00ed kontaktn\u00ed \u010do\u010dky na sv\u011bt\u011b, kter\u00e9 zvl\u00e1dnou zoom. Je to skv\u011bl\u00e1 zpr\u00e1va pro lidi posti\u017een\u00e9 v\u011bkem podm\u00edn\u011bnou makul\u00e1rn\u00ed degradac\u00ed s\u00edtnice, tedy ztr\u00e1tou vid\u011bn\u00ed v centru. \u010co\u010dka jim umo\u017en\u00ed l\u00e9pe rozpozn\u00e1vat detaily perifern\u00edm zrakem.<\/strong><\/p>\n

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Mezin\u00e1rodn\u00edmu t\u00fdmu v\u00fdzkumn\u00edk\u016f se poda\u0159ilo vytvo\u0159it prvn\u00ed kontaktn\u00ed \u010do\u010dky na sv\u011bt\u011b, kter\u00e9 zvl\u00e1dnou opticky 2,8kr\u00e1t p\u0159ibl\u00ed\u017eit pozorovan\u00fd objekt. Obdobn\u00fdm zoomem disponuje stomilimetrov\u00e1 \u010do\u010dka na digit\u00e1ln\u00ed zrcadlovce. Klasick\u00fd ornitologick\u00fd triedr p\u0159itom nab\u00edz\u00ed p\u0159ibl\u00ed\u017een\u00ed zhruba 15kr\u00e1t.<\/p>\n

Prvenstv\u00ed a unik\u00e1tnost objevu spo\u010d\u00edv\u00e1 v tom, \u017ee zm\u00edn\u011bn\u00e1 kontaktn\u00ed \u010do\u010dka je jen 1,17 milimetru tenk\u00e1, tud\u00ed\u017e je b\u011b\u017en\u011b nositeln\u00e1. D\u0159\u00edv\u011bj\u0161\u00ed modely byly bu\u010f minim\u00e1ln\u011b 4,4 milimetru tlust\u00e9, tedy nepou\u017eiteln\u00e9, nebo vy\u017eadovaly komplikovanou chirurgickou implantaci do oka.<\/p>\n

Kontaktn\u00ed \u010do\u010dka t\u00fdmu veden\u00e9ho doktory Josephem Fordem z Kalifornsk\u00e9 univerzity v San Diegu a Erikem Tremblayem z \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne vyu\u017e\u00edv\u00e1 poskl\u00e1dan\u00fdch spojn\u00fdch a rozptyln\u00fdch hlin\u00edkov\u00fdch mikrozrcadel a asf\u00e9rick\u00fdch objektiv\u016f um\u00edst\u011bn\u00fdch po sv\u00e9 obvodov\u00e9 plo\u0161e. Paprsek obrazu je v nich \u010dty\u0159ikr\u00e1t odra\u017een a sm\u011brov\u00e1n na okraj s\u00edtnice oka. Pr\u00e1v\u011b zm\u00edn\u011bn\u00e1 mikrozrcadla maj\u00ed na sv\u011bdom\u00ed 2,8n\u00e1sobn\u00e9 zv\u011bt\u0161en\u00ed obrazu a z\u00e1rove\u0148 opravuj\u00ed jev chromatick\u00e9 vady, v\u00fdsledkem je tak pom\u011brn\u011b vysok\u00e1 kvalita obrazu.<\/p>\n

P\u0159ep\u00ednat mezi b\u011b\u017en\u00fdm obrazem a zoomem je mo\u017en\u00e9 nasazen\u00edm aktivn\u00edch 3D televizn\u00edch br\u00fdl\u00ed s tekut\u00fdmi krystaly. St\u0159ed \u010do\u010dky je vybaven nezv\u011bt\u0161uj\u00edc\u00edm polariza\u010dn\u00edm filtrem.<\/p>\n

V\u00fdznam tohoto vyn\u00e1lezu m\u00e1 zna\u010dn\u00e9 dopady pro lidi posti\u017een\u00e9 v\u011bkem podm\u00edn\u011bnou makul\u00e1rn\u00ed degradac\u00ed, tedy ztr\u00e1tou ostrosti vid\u011bn\u00ed v centru s\u00edtnice, kde se nach\u00e1z\u00ed \u017elut\u00e1 skvrna. \u010co\u010dka jim umo\u017en\u00ed o n\u011bco l\u00e9pe rozpozn\u00e1vat detaily.<\/p>\n

Prototyp je vyroben z polymetylmetakryl\u00e1tu, kter\u00fd je pou\u017e\u00edv\u00e1n k v\u00fdrob\u011b takzvan\u00fdch tvrd\u00fdch kontaktn\u00edch \u010do\u010dek a je neprostupn\u00fd pro kysl\u00edk. T\u00fdm nyn\u00ed pracuje na \u010do\u010dk\u00e1ch z materi\u00e1l\u016f RGP (s vysokou propustnost\u00ed pro kysl\u00edk), jejich\u017e pou\u017eit\u00ed by m\u011blo zajistit je\u0161t\u011b v\u011bt\u0161\u00ed komfort p\u0159i jejich no\u0161en\u00ed.<\/p>\n

Makul\u00e1rn\u00ed degenerace s\u00edtnice je u lid\u00ed nad 65 let nej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010dinou praktick\u00e9 slepoty. Mnohdy se za\u010d\u00edn\u00e1 projevovat u\u017e po pades\u00e1tce.\u00a0 <\/strong><\/p>\n

P\u0159i makul\u00e1rn\u00ed degeneraci s\u00edtnice doch\u00e1z\u00ed k odum\u00edr\u00e1n\u00ed zrakov\u00fdch bun\u011bk v oblasti makuly, tedy \u017elut\u00e9 skvrny na s\u00edtnici. Ta je centrem ostr\u00e9ho vid\u011bn\u00ed. \u201eNemocn\u00fd \u010dlov\u011bk sice \u00fapln\u011b neoslepne, ale v pokro\u010dil\u00fdch stadi\u00edch vid\u00ed tak \u0161patn\u011b, \u017ee ho to t\u011b\u017ece invalidizuje,\u201c \u0159\u00edk\u00e1 MUDr. Jan Studni\u010dka, PhD., z O\u010dn\u00ed kliniky Fakultn\u00ed nemocnice v Hradci Kr\u00e1lov\u00e9. \u201eNem\u016f\u017ee \u010d\u00edst, pracovat na po\u010d\u00edta\u010di, sledovat televizi ani \u0159\u00eddit auto. Pozd\u011bji nerozezn\u00e1v\u00e1 ani r\u016fzn\u00e9 p\u0159edm\u011bty, barvy nebo tv\u00e1\u0159e bl\u00edzk\u00fdch lid\u00ed.\u201c<\/p>\n

E15.cz<\/p>\n

souvisej\u00edc\u00ed \u010dl\u00e1nek Jak se chr\u00e1nit p\u0159ed nemoc\u00ed st\u00e1rnouc\u00edch o\u010d\u00ed<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Mezin\u00e1rodn\u00edmu t\u00fdmu v\u00fdzkumn\u00edk\u016f se poda\u0159ilo vytvo\u0159it prvn\u00ed kontaktn\u00ed \u010do\u010dky na sv\u011bt\u011b, kter\u00e9 zvl\u00e1dnou zoom. Je to skv\u011bl\u00e1 zpr\u00e1va pro lidi posti\u017een\u00e9 v\u011bkem podm\u00edn\u011bnou makul\u00e1rn\u00ed degradac\u00ed […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-8250","post","type-post","status-publish","format-standard","hentry","category-zdravi"],"_links":{"self":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/8250","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8250"}],"version-history":[{"count":0,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/8250\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8250"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}