Diopter, yintoni na? Yintoni ifuthe layo kumbono?

Ixesha digital ukuba ngokuzithemba uhamba iplanethi, kukhokelele ekubeni uluntu kufuneka isebenze kunye nezinto kufutshane nabo. Ikhompyutha, digitizer, okanye isixhobo echanekileyo enyanzela amehlo ethu ukuba ukusebenza kuphela kwindlela enye oko yabonelelwa ngemvelo, yaye kusenokufuneka ukulungiswa. Maxa wambi yenziwa ngoncedo lenses okanye iiglasi kunye neyunithi ethile amandla alo okubonakalayo. Ibizwa ngokuba "diopter". Le miqathango ixabiso, hayi kunzima ukufumana. Ukubanako kukugxininisa imiqadi ukukhanya kwindawo enye, iyunithi umgama kude emva kokuba ukuwela lens khaxa.

Lens ngamehlo enyama

Loo lens bendalo iliso lensi yabantu enye kwawo medium, ukuba uyakwazi ukutshintsha imilinganiso yalo kwaye ukuxhomekeka kubungakanani bamandla ayo enombala sivela 57-59 ukuya 70-70,5 m ^-1 (zibonakaliswe njenge diopter). Kuthetha ntoni oku kuthetha ku umkhuba? Iliso yendalo lens Yenza Ukugxila imiqadi mgama ukusuka 1/57 ukuya ku-1 / 70.5 m ngokuguqula ugobile lens kunye nobukhulu, lenza ukwakhiwa umfanekiso kwi retina. Ukuba ubukhulu ukhozo lweliso banzi okanye lincitshiswe kwicala longitudinal, oku kukhokelela kumboniso engachanekanga. Kwimeko yokuqala, ekuthiwa ukubona, ngenxa umgama ukwanda ugxininisa kwenzeka kwangoko kunokuba kuyimfuneko. Kule yesibini yonke iphambene: iliso hyperopic sithuba soneleyo ukuba umfanekiso ukusekwa, kwaye oko kwenziwa has kwingqikelelo isisitheliso iliso - kwiretina.

Ukukhethwa indlela yokukhuza mbono

Kulo mzekelo, isisombululo esifanelekileyo bekuya kuba ukuba ndibhenele zamehlo, ngubani na ukujonga fundus kwaye khetha njengomncedisi efunekayo ukuze zilungele amehlo akho, itheyibhile diopter sisetyenziselwa ziingcali zoxilongo. Ukhombisa ubudlelwano phakathi utshintsho iliso kunye neendawo namandla zokunganyangeki. Ukulungiselela le njongo, ilens kunye neenqobo ezinqwenelekayo, uchithachitha okanye ugxininise, kwaye phezu kwetafile Sivtseva emiselwe ayimfuneko entle okanye embi amandla lensi (diopter umisela amanani ayo). Inika umguli? Yena ngoku ngokuchanileyo ukulandelela ngexabiso "dibanisa" okanye "lokucutha" zayo kusoloko ukufumana iingcebiso kunye utshintsho oluyimfuneko. Nangona kunjalo, ukusetyenziswa lenses okanye iiglasi hayi kunceda nje ukuphucula ubuchule iliso ukuze inikel '(umzekelo, -1 diopter). Yintoni ebalulekileyo, ngaphandle kwamathandabuzo. Uyakwazi ukusebenzisa iilensi contact anemibala ukutshintsha inkangeleko okanye iiglasi kunye neeglasi eqhelekileyo kunye isakhelo eninzi ukukhangela abadala. Kodwa musani ukukhetha ngokukhanya zabo njengoko njengomncedisi, kuba zininzi iparameters ezifana kwirediyasi ugobile ilens, yathunyelwa ngobhobhozo ukukhanya wokhuseleko UV kunye neminye imiqathango, umlinganiselo apho lwenziwa kuphela ziingcali. Emva kokuba umnini saveyi ziya kuba nako ngokukhuselekileyo kakuhle anxibe iiglasi okanye lenses contact.

amehlo Healthy zijikeleza

Emva kokuba umnini saveyi ziya kuba nako ngokukhuselekileyo kakuhle anxibe iiglasi okanye lenses contact. Xa ezinxaxhileyo ezincinane ukusuka udidi ± ngokukhanya 1 diopter aziyi kufuneka. Kodwa ukuba ixabiso mkhulu, ngoko ke kungcono ukuba ukunciphisa amandla lens kwi 0.5-1 m ^-1, akayi kuba apho iliso ngokugqithiseleyo udiniwe okanye isithunzi sobuvila. Emva nokugcina elibukhali abahlobo bakho imvakalo - usisiqinisekiso impilo yonke.