Ukuhlelwa kwezinto ezintathu eziphambili
Iilensi zeglasi
Kwiintsuku zokuqala, izinto eziphambili zeelensi yayiyiglasi yeglasi.Oku kwakungenxa yokuba iilensi zeglasi ezikhanyayo zinokuhanjiswa kokukhanya okuphezulu, ukucaca okuhle, kunye neenkqubo zokwenziwa ezikhulileyo nezilula.Nangona kunjalo, ingxaki enkulu kwiilensi zeglasi kukhuseleko lwazo.Zinokumelana nempembelelo embi kwaye kulula kakhulu ukuziqhawula.Ukongezelela, zinzima kwaye azikhululeki ukunxiba, ngoko ke isicelo sabo semarike sangoku silinganiselwe.
Iilensi ze-resin
Iilensi ze-resin ziilensi zamehlo ezenziwe nge-resin njengento ekrwada, icutshungulwe kwaye idityaniswe ngokweenkqubo ezichanekileyo zeekhemikhali kunye nokupolisha.Okwangoku, izinto ezisetyenziswa kakhulu kwiilensi yiresin.Iilensi zeresin zikhaphukhaphu ngobunzima xa zithelekiswa neelensi zeglasi kwaye zinefuthe elinamandla lokuchasa kuneelensi zeglasi, nto leyo eyenza ukuba kube lula ukuba zophuke kwaye kukhuseleke ngakumbi ukuzisebenzisa.Ngokwexabiso, iilensi zeresin nazo zifikeleleka ngakumbi.Nangona kunjalo, iilensi ze-resin zinokumelana okungalunganga kokukrweleka, zikhupha ioksijini ngokukhawuleza, kwaye ziqhelene kakhulu nemikrwelo yomphezulu.
Iilensi zePC
Iilensi zePC ziilensi ezenziwe ngepolycarbonate (izinto ezisetyenziswa kwi-thermoplastic) ezenziwe ngokufudumeza.Esi sixhobo sisuka kuphando lwenkqubo yasemajukujukwini kwaye saziwa ngokuba ziilensi zasemkhathini okanye iilensi zecosmic.Ngenxa yokuba i-PC resin yinto ephezulu yokusebenza kwe-thermoplastic, ifanelekile ukwenza iilensi zeglasi.Iilensi zePC zinokuchasana okugqwesileyo, phantse azinakwaphuka, kwaye zikhuselekile kakhulu ukuba zisetyenziswe.Ngokumalunga nobunzima, zikhaphukhaphu kunelensi zeresin.Nangona kunjalo, iilensi zePC kunokuba nzima ukusetyenzwa, kuzenze zibiza kakhulu.
Izinto Eziluncedo Zabantu Abalupheleyo
Kubantu abadala abafumana i-presbyopia, kuyacetyiswa ukuba bakhethe iilensi zeglasi okanye iilensi zeresin.I-Presbyopia ngokuqhelekileyo ifuna iiglasi zokufunda zamandla aphantsi, ngoko ke ubunzima beelensi abuyona inkxalabo ebalulekileyo.Ukongeza, abantu abalupheleyo bahlala bengasebenzi kakhulu, besenza iilensi zeglasi okanye iilensi ze-resin eziqinileyo ezikwaziyo ukumelana nokukrweleka, ngelixa zikwaqinisekisa ukusebenza kwamehlo okuhlala ixesha elide.
Izixhobo ezifanelekileyo kubantu abadala
Iilensi ze-resin zifanelekile kubantu abadala abaphakathi kunye nabaselula.Iilensi ze-resin zinika uluhlu olubanzi lweenketho, kubandakanywa ulwahlulo olusekwe kwisalathiso se-refractive, ukusebenza, kunye neendawo ezigxilwe kuzo, ngaloo ndlela ukuhlangabezana neemfuno ezahlukeneyo zamaqela ahlukeneyo.
Isixhobo esifanelekileyo sabantwana kunye nabafikisayo
Xa ukhetha iiglasi zabantwana, abazali bayacetyiswa ukuba bakhethe iilensi ezenziwe ngePC okanye izinto ze-Trivex.Xa kuthelekiswa nezinye iindidi zeelensi, ezi mathiriyeli azikhaphukhaphu kuphela kodwa zikwabonelela ngokumelana nempembelelo engcono kunye nokhuseleko oluphezulu.Ukongeza, iilensi zePC kunye neTrivex zinokukhusela amehlo kwimitha ye-UV eyingozi.
Ezi lensi zomelele kakhulu kwaye aziqhekeki lula, kungoko zibizwa ngokuba ziilensi zokhuseleko.Zinobunzima obuyi-2 grams kuphela cubic centimeter nganye, ngoku zezona zinto zikhaphukhaphu zisetyenziselwa iilensi.Akufanelekanga ukusebenzisa iilensi zeglasi kwiiglasi zabantwana, njengoko abantwana besasebenza kwaye iilensi zeglasi ziqhelene nokwaphuka, ezinokuthi zibenokwenzakalisa amehlo.
Ukuququmbela
Iimpawu zeemveliso zeelensi ezenziwe kwizinto ezahlukeneyo zihluke kakhulu.Iilensi zeglasi zinzima kwaye zinento ephantsi yokhuseleko, kodwa ziyakwazi ukumelana nokukrweleka kwaye zinexesha elide lokuzisebenzisa, nto leyo ezenza zilungele abantu abadala abanamaqondo aphantsi omsebenzi kunye ne-presbyopia ethambileyo.Iilensi zeResin ziza kwiindidi ezininzi kwaye zibonelela ngokusebenza okubanzi, zizenza zilungele izifundo ezahlukeneyo kunye neemfuno zomsebenzi zabantu abakwiminyaka ephakathi kunye nabancinci.Xa kuziwa kwiiglasi zamehlo zabantwana, ukhuseleko oluphezulu kunye nokukhanya kuyafuneka, ukwenza iilensi zePC zibe lukhetho olungcono.
Akukho nto ingcono, kuphela ulwazi olungaguqukiyo lwempilo yamehlo.Xa sikhetha iilensi ezenziwe ngezinto ezahlukeneyo, kufuneka siqwalasele ngokwembono yomthengi, sikhumbula imigaqo emithathu yokufakwa kweglasi yamehlo: ukuthuthuzela, ukuqina, nokuzinza.
Ixesha lokuposa: Jan-08-2024