Arcus senilis ndi chovala choyera kapena cha imvi chozungulira pamaso. Kornea ndizooneka bwino, zomangidwa ngati dome kumbali yakutsogolo ya diso. Kornea imapangidwa ndi zigawo 6 zosiyana ndipo nthawi zambiri zimakhala zomveka. Kornea imapereka gawo lalikulu la mphamvu yowonongeka kuti diso liwone kuwala bwino mpaka ku retina. Arcus senilis amawoneka kawirikawiri kwa okalamba, koma nthawi zina amakhalapo pakubadwa.
Pamene arcus senilis ikukula kumayambiriro kapena moyo wapakati, imatchulidwa ngati arcus juvenilis. Mtengo kapena mzere umene umapezeka ndi arcus senilis umachokera ku lipids (mafuta) kapena kolesterolini yomwe imayikidwa mu cornea.
Zimayambitsa
Arcus ikhoza kukhalapo mwa maso athu pokhapokha tikukhala motalika kokwanira. Kwa anthu ambiri, arcus ndi yowopsya ndipo sichidzakhudza masomphenya. Komabe, pamene chiwopsezo chikukula mwa anthu osakwana zaka makumi anayi, pali chifukwa chodera nkhawa. Chifukwa chifuwa ndi ma deposits a lipids, ngati muli ndi chiwombankhanga ndipo muli a zaka makumi anai, zingathe kuimira magazi omwe amapezeka m'magazi ndipo motero amatha kupatsa mafuta ambiri m'thupi.
Kugwirizana pakati pa arcus ndi mkulu wa cholesterol kapena matenda a atherosclerosis wakhala akutsutsana kwambiri. Pofika m'chaka cha 1852, katswiri wina wa mafupa a ku Germany, dzina lake Rudolf Virchow, anakambirana za mgwirizano pakati pa ziphuphu zamtunduwu ndi matenda a atherosclerosis. Komabe, pafupifupi zaka 40 pambuyo pake, William Osler yemwe adokotala adanena kuti kukakamiza sikunali kusanthula chifukwa cha "kuchepa kwa mafuta" kwa mtima.
Ngakhale pakalipano, kugwirizana komwe kulipo pakati pa arcus ndi vascular lipid deposits ndizovuta kwambiri. Mu 2008, National Institutes of Health inafalitsa nkhani yomwe inamaliza kuti: "Corneal arcus imasonyeza kufalikira kwa chidziwitso chodziwika bwino ndipo imagwirizanitsa ndi calcific atherosclerosis ndi xanthomatosis mwa odwala awa.
Odwala omwe ali ndi vuto lalikulu kwambiri amatha kukhala ndi calcific atherosclerosis. Kuthandizira kwa Korneal ... kumapangitsa kuti odwala ambiri asamagwiritsidwe ndi atherosclerosis . "
Kudziwa
Madokotala akamapenda kafukufuku wa maso , pali zinthu zambiri zomwe zimaganiziridwa musanasankhe. Mwachitsanzo, dokotala akamapenya chiwongoladzanja ali wamng'ono, adzasamala kwambiri zomwe apeza pa retina. Panthawi yofufuzidwa, madontho apadera a maso adzalowetsedwa m'diso kuti athetse ophunzirawo. Diso likayamba kuchepetsedwa, mitsempha ya retina imayang'anitsidwa chifukwa cha zizindikiro za matenda. Maonekedwe a mitsuko ya magazi ndi makulidwe angapereke chitsimikizo cha zigawo zomveka bwino za lipid ndi matenda a atherosclerosis. Ngati zikuwoneka kuti pali matenda enaake a m'mitsempha ya retinal, ndipo wodwalayo amakhala ndi chiwopsezo, ndiye kuti akhoza kukonzekera kukachezera dokotala wanu, internists kapena cardiologist.
Chithandizo
Palibe njira yabwino yopangira arcus kuchokapo. Ena adalimbikitsa zojambula zojambula maso kuti athandizidwe. Komabe, kwa mbali zambiri, izi sizilandiridwa m'magulu azachipatala.
Zimene Muyenera Kudziwa
Madokotala ochuluka a maso amayesa ndi lamulo lalikulu mu malingaliro pankhani ya kukakamiza.
Kwa odwala opitirira zaka makumi anayi, arcus nthawi zambiri ndiwopeza. Komabe, ngati ndinu wamng'ono kuposa makumi anayi, onani dokotala wanu wa banja ndipo osachepera muyeso wanu wa magazi m'thupi. Chifukwa chakuti ndinu wamng'ono kuposa makumi anai ndipo muli ndi chiwembu, sizikutanthauza kuti muli ndi mapepala apamwamba kwambiri, koma pokhapokha, mukulimbikitsidwa kuti muwone.
Arcus senilis corneae