Okuqukethwe
Nakuba ama-contact lens edinga ukunakekelwa okwengeziwe kunezibuko, abantu abaningi bakhululekile kakhulu ukusebenzisa amalensi okuxhumana. Kodwa udinga ukukhetha imikhiqizo efanele ukuze ingalimazi futhi ikhululekile ukuyisebenzisa.
Kungenzeka yini ukugqoka amalensi ngokubona kude
Yebo, ngokubona kude, ukulungiswa kokuxhumana kusetshenziswa ngenkuthalo namuhla, okusiza ukulungisa amandla abukekayo wamehlo, kunciphisa ubunzima be-hypermetropia. Ngalesi sifo, i-beam yokukhanya, lapho idlula i-cornea ne-lens, ayigxili ku-retina ngokwayo, kodwa ngemuva kwayo, ngakho-ke, izinto ezikude kuphela ezingabonwa ngokucacile, futhi izinto eziseduze zibonakala zifiphele, zifiphele. Ngakho-ke, ukulungisa ukubona kude, kusetshenziswa amalensi, akuvumela ukuthi ugxilise imisebe ku-retina.
Nokho, ngesilinganiso esincane sokubona kude, ukulungiswa kwelensi yokuxhumana akutuswa, ngokuvamile odokotela banikeza amaconsi akhethekile asweni, amakhemikhali aqukethe amavithamini kanye nezivivinyo zamehlo ukuze kuthuthukiswe ukubona. Isinqumo sokugcina mayelana nezinketho zokulungisa kufanele ngaso sonke isikhathi sibe nodokotela.
Imaphi amalensi angcono kakhulu ekuboneni kude?
Ngokubona kude okumaphakathi nokuqinile, ukulungisa kusetshenziswa namalensi okuxhumana enziwe nge-silicone noma i-hydrogel. Zithambile, zikhululekile ukugqoka futhi kulula ukuzinakekela. Amalensi aqinile enziwe ngezinto ze-polymer awavamile ukusetshenziswa namuhla.
Iluphi uhlobo lokulungiswa kwe-lens oluzofaneleka esimweni ngasinye esithile, kuyadingeka ukunquma kanye ne-ophthalmologist. Amalensi aqinile anezinzuzo eziningi, njengoba enziwa ngokuya ngosayizi ngamunye we-cornea, kucatshangelwa wonke ama-nuances angenzeka wezinguquko embonweni wesiguli. Angasetshenziswa izinyanga eziyisithupha ngaphandle kokushintshwa (inqobo nje uma enakekelwa ngokugcwele), kodwa abantu abaningi bangase baphatheke kabi lapho begqoke lawa ma lens, kuba nzima kakhulu ukuwajwayela.
Amalensi athambile athathwa njengokunethezeka kakhudlwana ukuwagqoka, ngenxa yokukhethwa okubanzi, ungakhetha izinketho zamalensi ukuze ulungise noma yiliphi izinga lokubona kude.
Uyini umehluko phakathi kwamalensi okubona kude namalensi ajwayelekile?
Amalensi othintana naye ajwayelekile anamandla afanayo acwebezelayo. Kodwa lapho kukhona ukukhubazeka okubi kakhulu, okunzima eduze kombono, kuyadingeka ukusebenzisa imikhiqizo ye-bifocal noma ye-multifocal enamandla ahlukene e-refractive ezindaweni ezithile zelensi.
Amalensi e-Bifocal anezindawo ezimbili zokubuka, anqunyelwe iziguli ezingenazo ezinye iziyaluyalu ezibonakalayo ezihambisanayo.
Amalensi amaningi asiza ekulungiseni ukubona kude, okungahlanganiswa nokuba khona kwe-astigmatism noma ukubona eduze. Ngesikhathi esifanayo banezifunda ezimbalwa ze-optical ezinamandla ahlukene e-refractive.
Ukubuyekezwa kodokotela mayelana namalensi okubona kude
- Ukusetshenziswa kwamalensi okubona kude ezigulini ezisencane kunikeza imiphumela emihle. Lokhu kulungiswa kubekezelelwa kahle futhi kuvumela ukubona okucacile uma kuqhathaniswa nokulungiswa kombukwane. Kodwa lapho kukhona i-presbyopia ehlobene neminyaka, kungase kuphakame ubunzima lapho kusetshenziswa ukulungiswa okunjalo, - kusho udokotela wamehlo u-Olga Gladkova.
Imibuzo nezimpendulo ezidumile
Saxoxa no udokotela wamehlo u-Olga Gladkova nezindaba zokukhetha ukulungisa othintana naye ngokubona kude, kwacacisa amanye ama-nuances wokukhethwa nokugqokwa kwemikhiqizo.
Iyiphi ilensi esetshenziselwa ukulungisa ukubona kude kubantu abadala?
Ngokuncipha okuphawulekayo kombono kanye nezindawo zamehlo ezingaboni kahle (ngokwesibonelo, ngama-cataract avuthiwe kanye ne-corneal cataracts), ama-lens awasebenzi, ngakho-ke awasetshenziswa.