Khangela i-diopter yeso, khetha iifreyimu ezijoliswe kakuhle, abantu abaninzi baya kuba nemibuzo: ezininzi iimpawu, iintlobo, iilensi ezisebenzayo, ezifanelekileyo kum?Ngaba "ndenza into yam", "landela intliziyo yam", okanye "uPhendlo lukaGoogle"?
I-brand yeLens, ifilimu eyahlukileyo, isalathiso se-refractive, imisebenzi eyahlukeneyo, iziphumo ezahlukeneyo ze-optical kunye nezinye izinto, kuya kubakho ininzi okanye amakhulu eentlobo zeelensi, abantu bayathandabuza.
Ngoku, makhe sithethe ngokufutshane malunga neyona lens isetyenziswa kakhulu.Ukusuka kwindawo yokujonga isicelo, kukho iilensi zokukhanya okukodwa kunye neelensi ezisebenzayo.
ILens enye: ILens enye ithetha ukuba lilinye kuphela iziko le-optical kwiLens, iziko le-optical lenziwa ukuze lihambelane nommandla womfundi wakho (yiyo loo nto umgama womfundi ulinganiswa) .
iilensi zokukhanya okukodwa zahlulahlulwe ngokomnkqatho zibe ngqukuva, iaspherical, biaspherical and free-form Lenses, iilensi ezinomgangatho okhululekileyo okwangoku zezona zingcono ngokumalunga nokunciphisa ukuphambuka kunye nokugqwetheka, kodwa zikwaxabisa kancinci kunezinye iilensi.Xa ukhetha, kufuneka ngokuhambelana nokukhanya kweso kunye neqondo le-astigmatism yokukhetha.
I-Lens enye lolona khetho lusisiseko kunye olulula kwabo banamandla okwaneleyo okuhlengahlengisa, oko kukuthi, abo bangenayo i-Presbyopia.Kodwa kubantu abaqala ukuphuhlisa i-PRESBYOPIA, iilensi ze-monocular zingasetyenziswa kuphela kumgama omiselweyo, okanye kumgama (ukuqhuba) , okanye kumgama (kwiikhompyuter zedesktop) , okanye kumgama osondeleyo (ukufunda) , hayi zombini.Senza ntoni ke ngoku?Isisombululo esinye: iperi yeglasi kumgama, kwaye enye: iiglasi ezininzi eziqhubekayo.
IiLensi ezisebenzayo: kubandakanywa iiLens ezichasene nokudinwa, iilensi ze-bifocal, iilensi ezininzi eziqhubekayo, iilensi zabantwana zokucothisa ukukhula kweMyopia (i-peripheral defocus lens, bifocal + prism lens) njalo njalo.
Iilensi ezisebenzayo zinezinto ezininzi, indlela yokukhetha, enye kukubona imfuno yethu yeeglasi, ezimbini yinjongo yeeglasi.Thatha iilensi ezininzi eziqhubekayo, eziziglasi ezisebenzayo ezenzelwe ukuhlangabezana neemfuno zabantu ababona kude nababona kufutshane.Umzekelo, utitshala kusenokufuneka ajonge ebhodini ngelixa ethetha nabafundi eklasini (ejonge kumgama) nakwisicwangciso sesifundo (ejonge ukusetyenziswa ngokusondeleyo) .Okanye intlanganiso yesebe inokufuna ukujonga izilayidi kunye nekhompyuter, nayo kufuneka ithathele ingqalelo iinkcazo zabathathi-nxaxheba, iiglasi ezigxininise kakhulu kwindima enkulu.
Kunokuthiwa ukuba iperi yeglasi eqhubekayo inokusombulula ingxaki yokukwazi ukubona ngokucacileyo kwimigama eyahlukeneyo, kwaye ayifani ne-Lens yokukhanya okukodwa ngokubonakalayo, ukugcina amehlo ethu "efriziwe", kodwa i-Optometry kunye neelensi ezihambelanayo nazo. ayilula njengelensi enye.
1. Ukulinganisa ngokuchanekileyo ukukhanya okude.
I-2, ngokweminyaka yobudala, umkhwa wokuvala umgama wokusebenza, indawo yamehlo, ukuphendulwa kokulungelelaniswa, ukulungelelaniswa okuhle kunye nokubi, njl njl.Kwaye ukhethe iChannel efanelekileyo (oko kukuthi, ubude bezowuni yokutshintsha phakathi kweendawo ezikude kunye nezikufutshane zokukhanya kwiLens) ukuze uhlangabezane neemfuno zomsebenzi wemihla ngemihla.
3. Ulungelelwaniso lwesakhelo somntu.Ngokokuphakama kwebhulorho yempumlo yomntu ngamnye, ukuphakama kweendlebe kunye nokunye kwisakhelo sesikolo, ukwenzela ukuba iiglasi zinxibe kakuhle.
4. Umlinganiselo womgama womfundi.Umgama phakathi kwamehlo akufuphi nakude, umphakamo womfundi kwiNkcazo eNgqo kwesakhelo, kunye nophawu kwisakhelo esikhethiweyo kufuneka kulinganiswe.Ukuze ufumane umphumo obonakalayo kunye nokunciphisa ukuphazamiseka kwendawo ye-Aberration ekuboneni xa unxibe iilensi eziqhubekayo, iindawo ezikude kunye nezikufutshane zokukhanya zikwindawo ehambelanayo yomfundi.
5. Imilinganiselo eyongezelelweyo iyafuneka ukuyila iilensi eziqhubela phambili ezikhululekileyo: Umgama wamehlo (umgama osuka phezulu kwi-cornea ukuya kwiLens), ukugoba kwesakhelo, i-angle ethambekileyo yesakhelo, imilo kunye nobukhulu besakhelo, njl.Ngokomlinganiselo wokuhamba kwentloko kunye nokuhamba kwamehlo, sikhetha uhlobo olufanelekileyo, olunokunciphisa impembelelo yendawo yokuphambuka kumacala omabini eLens, ukunciphisa ixesha lokulungelelanisa, kwaye wenze ukunxiba kube lula.
Ngoko ke, ukhetho lweLens alufanele lugxininise kuphela kwi-brand okanye kwixabiso, kungekhona i-lens ebiza kakhulu, kungcono ukhethe ukungakhethi.Oogqirha bamehlo bacebisa ukuba ukhethe iilensi ezisekelwe kwiimeko zabo, iimfuno zamehlo kunye neengcebiso zoogqirha bamehlo ukuba bazikhethele iilensi ezifanelekileyo.
Ixesha lokuposa: Jul-28-2021