{"id":105809,"date":"2026-05-04T06:09:19","date_gmt":"2026-05-04T04:09:19","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=105809"},"modified":"2026-05-04T06:09:19","modified_gmt":"2026-05-04T04:09:19","slug":"vyzkum-identifikoval-interierove-osvetleni-jako-klicovy-faktor-globalni-epidemie-kratkozrakosti","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2026\/05\/04\/vyzkum-identifikoval-interierove-osvetleni-jako-klicovy-faktor-globalni-epidemie-kratkozrakosti\/","title":{"rendered":"V\u00fdzkum identifikoval interi\u00e9rov\u00e9 \u200b\u200bosv\u011btlen\u00ed jako kl\u00ed\u010dov\u00fd faktor glob\u00e1ln\u00ed epidemie kr\u00e1tkozrakosti"},"content":{"rendered":"
<\/div>\n

Kr\u00e1tkozrakost (myopie) je v sou\u010dasnosti jednou z nejrychleji rostouc\u00edch zdravotn\u00edch kriz\u00ed na cel\u00e9m sv\u011bt\u011b. Jedn\u00e1 se o stav, p\u0159i kter\u00e9m \u010dlov\u011bk vid\u00ed ost\u0159e na bl\u00edzko, ale rozmazan\u011b do d\u00e1lky.<\/span><\/strong><\/p>\n

Dnes \u017eije v\u00edce ne\u017e 2,2 miliardy lid\u00ed s n\u011bjakou formou zrakov\u00e9ho posti\u017een\u00ed a odborn\u00edci p\u0159edpokl\u00e1daj\u00ed, \u017ee do roku 2050 bude m\u00edt myopii t\u00e9m\u011b\u0159 polovina sv\u011btov\u00e9 populace.<\/span><\/p>\n

V n\u011bkter\u00fdch \u010d\u00e1stech v\u00fdchodn\u00ed Asie se m\u00edra kr\u00e1tkozrakosti mezi mlad\u00fdmi dosp\u011bl\u00fdmi ji\u017e bl\u00ed\u017e\u00ed 90 %.<\/span><\/p>\n

Nov\u00fd v\u00fdzkum publikovan\u00fd v \u00fanoru 2026 v odborn\u00e9m \u010dasopise\u00a0<\/span>Cell Reports<\/span><\/em>\u00a0v\u0161ak zpochyb\u0148uje zjednodu\u0161en\u00fd narativ o genetick\u00fdch faktorech a tvrd\u00ed, \u017ee prim\u00e1rn\u00ed p\u0159\u00ed\u010dinou epidemie je dlouhodob\u00e1 pr\u00e1ce s d\u00edv\u00e1n\u00edm do bl\u00edzka p\u0159i slab\u00e9m osv\u011btlen\u00ed v interi\u00e9ru.<\/span><\/p>\n

Biologick\u00fd mechanismus, jak \u0161patn\u00e9 osv\u011btlen\u00ed p\u0159isp\u00edv\u00e1 ke kr\u00e1tkozrakosti<\/span><\/h2>\n

V\u011bdci z Fakulty optometrie St\u00e1tn\u00ed univerzity v New Yorku p\u0159edstavili specifick\u00fd biologick\u00fd mechanismus, jak doch\u00e1z\u00ed k uveden\u00e9mu jevu.<\/span><\/p>\n

Kdy\u017e se oko pod\u00edv\u00e1 na n\u011bco v bl\u00edzkosti, zornice se z\u00fa\u017e\u00ed, aby se obraz zaost\u0159il. P\u0159i jasn\u00e9m vn\u011bj\u0161\u00edm sv\u011btle toto z\u00fa\u017een\u00ed v\u00fdznamn\u011b nesni\u017euje osv\u011btlen\u00ed s\u00edtnice. Av\u0161ak p\u0159i slab\u00e9m osv\u011btlen\u00ed v interi\u00e9ru stejn\u00fd stupe\u0148 z\u00fa\u017een\u00ed zornice dramaticky sni\u017euje mno\u017estv\u00ed sv\u011btla dopadaj\u00edc\u00edho na s\u00edtnici.<\/span><\/p>\n

Podle v\u00fdzkumu m\u016f\u017ee toto chronick\u00e9 \u201ehladov\u011b po sv\u011btle\u201c v pr\u016fb\u011bhu m\u011bs\u00edc\u016f a let oslabit nervov\u00e9 dr\u00e1hy zodpov\u011bdn\u00e9 za zdrav\u00fd zrak a v\u00e9st k postupn\u00e9mu prodlu\u017eov\u00e1n\u00ed o\u010dn\u00ed bulvy, kter\u00e1 je zodpov\u011bdn\u00e1 za kr\u00e1tkozrakost.<\/span><\/p>\n

Auto\u0159i studie \u0159\u00edkaj\u00ed, \u017ee tento fakt je d\u016fle\u017eit\u00fd, proto\u017ee m\u011bn\u00ed praktick\u00e1 doporu\u010den\u00ed na ochranu zraku.<\/span><\/p>\n

P\u0159ehodnocen\u00ed vlivu obrazovek a prost\u0159ed\u00ed na zrak<\/span><\/h2>\n

V\u00fdzkum nazna\u010duje, \u017ee kritick\u00fdm faktorem je sv\u011bteln\u00e9 prost\u0159ed\u00ed, ve kter\u00e9m se pr\u00e1ce zbl\u00edzka vykon\u00e1v\u00e1, nikoli samotn\u00e1 obrazovka. Podle studie \u010dten\u00ed knihy ve slab\u011b osv\u011btlen\u00e9 m\u00edstnosti nese stejn\u00e9 riziko jako rolov\u00e1n\u00ed na telefonu ve slab\u00e9m sv\u011btle.<\/span><\/p>\n

Naopak pou\u017e\u00edv\u00e1n\u00ed za\u0159\u00edzen\u00ed s obrazovkou v jasn\u00e9m, dob\u0159e osv\u011btlen\u00e9m prostoru je m\u00e9n\u011b \u0161kodliv\u00e9 ne\u017e stejn\u00e1 \u010dinnost ve tm\u011b nebo p\u0159i slab\u00e9m sv\u011btle.<\/span><\/p>\n

To vysv\u011btluje, pro\u010d rodi\u010de a o\u010dn\u00ed l\u00e9ka\u0159i, kte\u0159\u00ed se zam\u011b\u0159ovali v\u00fdlu\u010dn\u011b na omezen\u00ed \u010dasu str\u00e1ven\u00e9ho p\u0159ed obrazovkou, mohli p\u0159ehl\u00e9dnout kl\u00ed\u010dov\u00fd faktor environment\u00e1ln\u00edho vlivu.<\/span><\/p>\n

Nov\u00e1 zji\u0161t\u011bn\u00ed p\u0159esouvaj\u00ed preventivn\u00ed zam\u011b\u0159en\u00ed ze samotn\u00e9ho za\u0159\u00edzen\u00ed s obrazovkou na kvalitu sv\u011btla osv\u011btluj\u00edc\u00edho objekt, na kter\u00fd zaost\u0159ujeme, a to bez ohledu na pou\u017eit\u00e9 za\u0159\u00edzen\u00ed.<\/span><\/p>\n

D\u016fkazy podporuj\u00edc\u00ed ochrann\u00fd \u00fa\u010dinek vn\u011bj\u0161\u00edho sv\u011btla<\/span><\/h2>\n

Mechanismus \u00fa\u010dinku je tak\u00e9 v souladu s dlouhodob\u00fdmi pozorov\u00e1n\u00edmi, \u017ee \u010das str\u00e1ven\u00fd venku chr\u00e1n\u00ed p\u0159ed kr\u00e1tkozrakost\u00ed.<\/span><\/p>\n

Metaanal\u00fdza 15 studi\u00ed z roku 2025, do kter\u00fdch bylo zapojeno 16 597 \u00fa\u010dastn\u00edk\u016f, p\u0159\u00edmo potvrdila vztah mezi d\u00e1vkou sv\u011btla a po\u0161kozen\u00edm zraku.<\/span><\/p>\n

Podle anal\u00fdzy, ve srovn\u00e1n\u00ed s pouh\u00fdmi 3,5 hodinami pobytu venku t\u00fddn\u011b, zv\u00fd\u0161en\u00ed na 27 hodin t\u00fddn\u011b sn\u00ed\u017eilo riziko vzniku kr\u00e1tkozrakosti a\u017e o 69 procent.<\/span><\/p>\n

Samostatn\u00fd v\u00fdzkum z roku 2024, ve kter\u00e9m se pomoc\u00ed inteligentn\u00edch hodinek m\u011b\u0159ila expozice sv\u011btlu u 2 976 d\u011bt\u00ed, zjistil, \u017ee pobyt venku v trv\u00e1n\u00ed nejm\u00e9n\u011b 15 minut p\u0159i osv\u011btlen\u00ed 2 000 lux\u016f (typick\u00fd zamra\u010den\u00fd den) nebo vy\u0161\u0161\u00edm trvale chr\u00e1n\u00ed p\u0159ed progres\u00ed kr\u00e1tkozrakosti.<\/span><\/p>\n

P\u0159esto\u017ee se zamra\u010den\u00fd den m\u016f\u017ee zd\u00e1t relativn\u011b tmav\u00fd, st\u00e1le p\u0159edstavuje n\u011bkolikan\u00e1sobn\u011b v\u011bt\u0161\u00ed intenzitu sv\u011btla, jak\u00e1 b\u00fdv\u00e1 v interi\u00e9rech.<\/span><\/p>\n

Jasn\u00e9 p\u0159irozen\u00e9 sv\u011btlo zabra\u0148uje z\u00fa\u017een\u00ed zornic, kter\u00e9 zp\u016fsobuje sv\u011bteln\u00e9 hladov\u011bn\u00ed s\u00edtnice p\u0159i pr\u00e1ci s d\u00edv\u00e1n\u00edm na bl\u00edzko.<\/span><\/p>\n

V\u00fd\u017eivov\u00e9 a \u017eivotn\u00ed aspekty zdrav\u00ed s\u00edtnice<\/span><\/h2>\n

Krom\u011b osv\u011btlen\u00ed n\u011bkte\u0159\u00ed v\u00fdzkumn\u00edci poukazuj\u00ed na v\u00fd\u017eivu jako faktor podporuj\u00edc\u00ed strukturu a funkci s\u00edtnice.<\/span><\/p>\n

\u017diviny jako\u00a0<\/span>lutein<\/span><\/strong>\u00a0a\u00a0<\/span>zeaxantin<\/span><\/strong>\u00a0, kter\u00e9 se nach\u00e1zej\u00ed ve vaje\u010dn\u00fdch \u017eloutc\u00edch, kapust\u011b a \u0161pen\u00e1tu, se podle nutri\u010dn\u00edch anal\u00fdz koncentruj\u00ed ve tk\u00e1ni s\u00edtnice a chr\u00e1n\u00ed p\u0159ed jej\u00edm oxida\u010dn\u00edm po\u0161kozen\u00edm.<\/span><\/p>\n

Omega-3 mastn\u00e9 kyseliny, zejm\u00e9na DHA<\/span><\/strong>\u00a0, podporuj\u00ed struktur\u00e1ln\u00ed integritu fotoreceptorov\u00fdch bun\u011bk.<\/span><\/p>\n

Zast\u00e1nci p\u0159irozen\u00fdch p\u0159\u00edstup\u016f ke zdrav\u00ed tak\u00e9 doporu\u010duj\u00ed na ochranu jemn\u00fdch c\u00e9v v oku, kter\u00e9 z\u00e1sobuj\u00ed s\u00edtnici, omezit stravovac\u00ed n\u00e1vyky zp\u016fsobuj\u00edc\u00ed t\u011blesn\u00e9 z\u00e1n\u011bty, jako jsou nap\u0159\u00edklad ty s vysok\u00fdm obsahem rafinovan\u00fdch cukr\u016f a zpracovan\u00fdch potravin.<\/span><\/p>\n

\u0160ir\u0161\u00ed d\u016fsledky zji\u0161t\u011bn\u00ed<\/span><\/h2>\n

Uveden\u00e1 zji\u0161t\u011bn\u00ed m\u011bn\u00ed zam\u011b\u0159en\u00ed se z pouh\u00e9ho omezen\u00ed obrazovek na z\u00e1m\u011brn\u00e9 zlep\u0161en\u00ed vnit\u0159n\u00edho osv\u011btlen\u00ed a zaji\u0161t\u011bn\u00ed denn\u00edho vystaven\u00ed se jasn\u00e9mu vn\u011bj\u0161\u00edmu sv\u011btlu.<\/span><\/p>\n

Podle v\u00fdzkumu m\u016f\u017ee m\u00edt ji\u017e 15 a\u017e 20 minut jasn\u00e9ho vn\u011bj\u0161\u00edho sv\u011btla denn\u011b m\u011b\u0159iteln\u00fd vliv na zdrav\u00ed s\u00edtnice.<\/span><\/p>\n

N\u011bkte\u0159\u00ed kritici mainstreamov\u00e9 optometrie tvrd\u00ed, \u017ee tento faktor prost\u0159ed\u00ed se \u010dasto p\u0159ehl\u00ed\u017e\u00ed ve prosp\u011bch p\u0159edepisov\u00e1n\u00ed korek\u010dn\u00edch \u010do\u010dek, kter\u00e9 \u0159e\u0161\u00ed symptom, ale ne z\u00e1kladn\u00ed p\u0159\u00ed\u010dinu.<\/span><\/p>\n

Poznamen\u00e1vaj\u00ed, \u017ee glob\u00e1ln\u00ed n\u00e1r\u016fst kr\u00e1tkozrakosti odpov\u00edd\u00e1 modern\u00edmu \u017eivotn\u00edmu stylu v interi\u00e9rech, kter\u00fd s\u00edtnici systematicky odp\u00edr\u00e1 dostate\u010dn\u00e9 mno\u017estv\u00ed sv\u011btla, \u010d\u00edm\u017e vytv\u00e1\u0159\u00ed formu chronick\u00e9 zrakov\u00e9 deprivace.<\/span><\/p>\n

P\u0159\u00edrodn\u00ed l\u00e9\u010dba kr\u00e1tkozrakosti<\/span><\/h2>\n

P\u0159\u00edrodn\u00edmu zp\u016fsobu zlep\u0161en\u00ed zraku se podrobn\u011b v\u011bnujeme v na\u0161\u00ed elektronick\u00e9 knize. V\u00edce informac\u00ed o knize naleznete\u00a0<\/span>ZDE<\/span><\/strong><\/a>\u00a0\u00a0(o \u010desk\u00e9 verzi knihy\u00a0\u00a0<\/span>ZDE<\/span><\/strong><\/a>\u00a0).<\/span><\/p>\n

V e-knize se dozv\u00edte o v\u00e1\u017en\u00fdch rizic\u00edch laserov\u00fdch operac\u00ed o\u010d\u00ed, jak zlep\u0161it ostrost vid\u011bn\u00ed p\u0159i kr\u00e1tkozrakosti i dalekozrakosti, pro\u010d br\u00fdle a \u010do\u010dky zraku v\u00edce \u0161kod\u00ed, ne\u017e pom\u00e1haj\u00ed, pro\u010d slune\u010dn\u00ed br\u00fdle po\u0161koduj\u00ed o\u010di, zda by d\u011bti m\u011bly nebo nem\u011bly nosit br\u00fdle, kter\u00e9 bylinky, potraviny.<\/span><\/p>\n

Autor: Coco Somers, Zdroj:\u00a0<\/span>naturalnews.com<\/span><\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Kr\u00e1tkozrakost (myopie) je v sou\u010dasnosti jednou z nejrychleji rostouc\u00edch zdravotn\u00edch kriz\u00ed na cel\u00e9m sv\u011bt\u011b. Jedn\u00e1…<\/p>\n","protected":false},"author":2,"featured_media":105810,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[9146,2827,21,8673],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/105809"}],"collection":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/comments?post=105809"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/105809\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/105810"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=105809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=105809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=105809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}