{"id":274,"date":"2020-06-30T11:35:50","date_gmt":"2020-06-30T11:35:50","guid":{"rendered":"http:\/\/nutricorp.kwayythemes.com\/?p=274"},"modified":"2021-01-04T18:55:50","modified_gmt":"2021-01-04T18:55:50","slug":"kas-ir-progresivas-lecas","status":"publish","type":"post","link":"https:\/\/mobileoptic.lv\/lv\/2020\/06\/30\/kas-ir-progresivas-lecas\/","title":{"rendered":"Progres\u012bv\u0101s bri\u013c\u013cu l\u0113cas"},"content":{"rendered":"<p>Izv\u0113loties korekcijas veidu, j\u0101\u0146em v\u0113r\u0101 pacienta vecuma, profesija, dz\u012bves veids, hobiji. Pieejamas da\u017e\u0101du veidu progres\u012bv\u0101s l\u0113cas, ar da\u017e\u0101du p\u0101rejas sadal\u012bjumu, t\u0101d\u0113j\u0101di ir iesp\u0113ja piemekl\u0113t katram pacientam vi\u0146am piem\u0113rot\u0101ko l\u0113cu tipu.<\/p>\n<p><!--more--><\/p>\n<p>Vienk\u0101r\u0161u progres\u012bvo l\u0113cu optiskie principi ir saprotami jau sen. Agr\u0101ko progres\u012bvo l\u0113cu patentu 1907. gad\u0101 iesniedza Owen Aves, Londonas Refrakcijas slimn\u012bcas (tagad paz\u012bstams k\u0101 Optometrijas instit\u016bts) l\u012bdzdibin\u0101t\u0101js. Vi\u0146a izgudrojums bija divpus\u0113jas virsmas progres\u012bv\u0101s l\u0113cas dizains, kas sast\u0101v\u0113ja no konusa da\u013cas vien\u0101 pus\u0113 un eliptiska cilindra da\u013cas otr\u0101 pus\u0113. Konuss nodro\u0161in\u0101ja pak\u0101penisku izliekuma palielin\u0101\u0161anos caur horizont\u0101lajiem l\u0113cas meridi\u0101niem, savuk\u0101rt elipsveida cilindrs nodro\u0161in\u0101ja pak\u0101penisku izliekuma palielin\u0101\u0161anos caur vertik\u0101lajiem l\u0113cas meridi\u0101niem, kas bija aptuveni vien\u0101ds ar horizont\u0101lajiem izliekumiem attiec\u012bgajos punktos pret\u0113j\u0101 virsm\u0101. Diem\u017e\u0113l rot\u0101cijas simetrijas tr\u016bkums un Aves divk\u0101r\u0161\u0101s virsmas raksturs padar\u012bja to nepraktisku masveida ra\u017eo\u0161an\u0101 k\u0101 sfero-cilindrisko l\u0113cu, t\u0101p\u0113c t\u0101 nekad netika ieviesta komerci\u0101li. Bija vair\u0101ki m\u0113\u0123in\u0101jumi uzlabot l\u0113cas dizainu un padar\u012bt t\u0101s viegl\u0101k izgatavojamas un lietojamas. Tom\u0113r da\u017e\u0101du ierobe\u017eojumu d\u0113\u013c progres\u012bvaj\u0101m l\u0113c\u0101m l\u012bdz 1960. gadiem nebija nek\u0101du re\u0101lu komerci\u0101lu pan\u0101kumu ( <em>Meister &amp; Fisher<\/em>, 2007).<\/p>\n<p>Ar pak\u0101peniski main\u012bgu stipruma koridoru, kas savieno t\u0101luma da\u013cu ar tuv\u0101s zonas da\u013cu, progres\u012bv\u0101s l\u0113cas var nodro\u0161in\u0101t skaidru redzam\u012bbu da\u017e\u0101diem att\u0101lumiem. Daudziem pieejamajiem l\u0113cu dizainparaugiem ir at\u0161\u0137ir\u012bgs stipruma sadal\u012bjums un p\u0101reja, ko var \u0146emt v\u0113r\u0101 individu\u0101l\u0101m pacienta vajadz\u012bb\u0101m. Pie atbilsto\u0161ajiem progres\u012bv\u0101s l\u0113cas parametriem pieder: koridora garums un platums, tuv\u0101s zonas lielums, forma un atra\u0161an\u0101s vieta, p\u0101reja starp att\u0101luma un tuvuma zon\u0101m, un asf\u0113riskums (<em>Milder &amp; Rubin<\/em>, 1991).<\/p>\n<p>Progres\u012bvo bri\u013c\u013cu priek\u0161roc\u012bbas:<\/p>\n<ul>\n<li>nav redzamas las\u0101m\u0101s da\u013cas zonas l\u012bnijas k\u0101 bifok\u0101laj\u0101m (skat\u012bt att\u0113lu 1.1.) vai trifok\u0101laj\u0101m bri\u013c\u013cu l\u0113c\u0101m, kas liel\u0101koties asoci\u0113jas ar vecuma brill\u0113m;<\/li>\n<li>progres\u012bv\u0101s l\u0113cas rada pak\u0101penisku stipruma izmai\u0146u no att\u0101luma zonas uz tuvuma zonu, kas lietot\u0101jam nodro\u0161ina bezgal\u012bgu fokusa diapazonu starp att\u0101lumu un tuvumu. \u0160is bezgal\u012bgais fokusa diapazons nodro\u0161ina izcilu vai viduv\u0113ju vid\u0113j\u0101 diapazona zonu, kas nav tradicion\u0101laj\u0101m bifok\u0101laj\u0101m vai Add power tipa bri\u013c\u013cu l\u0113c\u0101m;<\/li>\n<li>bifok\u0101l\u0101s l\u0113cas rada l\u0113ciena efektu, mainot skatu no t\u0101luma un tuvuma zonu, k\u0101 ar\u012b rada miglo\u0161an\u0101s un skotomas vai aklo zonu las\u0101m\u0101s zonas segmenta mal\u0101. Progres\u012bv\u0101s l\u0113cas dizaina \u012bpatn\u012bba \u2013 pak\u0101penisk\u0101 stipruma mai\u0146a, izsl\u0113dz \u0161\u0101das l\u0113cienveida izmai\u0146as (<em>Meister<\/em>, 2006).<\/li>\n<\/ul>\n<p>2020. gada Ilzes Daugello ma\u0123istra darbs &#8220;Progres\u012bvo bri\u013c\u013cu l\u0113cu lietot\u0101ju piera\u0161anas nosac\u012bjumi&#8221;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Progres\u012bv\u0101s bri\u013c\u013cu l\u0113cas ir presbiopijas kori\u0123\u0113jo\u0161\u0101s oftalmisk\u0101s l\u0113cas, kur\u0101m ir t\u0101luma, vid\u0113j\u0101 un tuvuma zonas, kas nodro\u0161ina skaidru redzi visos skata att\u0101lumos. <\/p>\n","protected":false},"author":1,"featured_media":5883,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[114],"class_list":["post-274","post","type-post","status-publish","format-gallery","has-post-thumbnail","hentry","category-ocular","tag-progresivas-lecas","post_format-post-format-gallery"],"jetpack_featured_media_url":"https:\/\/mobileoptic.lv\/wp-content\/uploads\/2020\/06\/istockphoto-854279592-612x612-1.jpg","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/posts\/274","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/comments?post=274"}],"version-history":[{"count":3,"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/posts\/274\/revisions"}],"predecessor-version":[{"id":5858,"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/posts\/274\/revisions\/5858"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/media\/5883"}],"wp:attachment":[{"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/media?parent=274"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/categories?post=274"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mobileoptic.lv\/lv\/wp-json\/wp\/v2\/tags?post=274"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}