Izibuko zokufunda ziwuhlobo lwezibuko zamehlo, ezinikeza izibuko ze-myopia ezivame ukusetshenziswa abantu abane-presbyopia, okuyingxenye yelensi eyi-convex. Izibuko zokufunda zisetshenziselwa ukugcwalisa amehlo abantu abaneminyaka ephakathi kanye nasebekhulile. Njengezibuko ze-myopia, banamanani amaningi e-electronic optical index adingekayo ngamazinga emboni kazwelonke, futhi anezinye izikhathi ezihlukile zohlelo lokusebenza. Ngakho-ke, izibuko zokufunda kufanele zifakwe izibuko.
Okokuqala, ukuhlukaniswa okuyisisekelo kwezibuko zokufunda
Njengamanje, kunezinhlobo ezintathu ezibalulekile zezibuko zokufunda emakethe, okuyilensi yokubona eyodwa, ilensi ye-bifocal kanye ne-asymptotic multifocal lens.
Ilensi yombono owodwa ingasetshenziswa kuphela ukuze ubone eduze, futhi ukubona kufanele kubuyiselwe lapho ubheka ibanga. Ilungele kuphela abantu abane-presbyopia elula kanye nemvamisa ephansi yokusebenzisa izibuko zokufunda;
I-Bifocals ibhekisela ezingilazini zokufunda ezinelensi yombukwane engenhla esetshenziselwa ukubona kude, kanye nelensi yokubukwa eyingxenye engezansi ejwayele ukubona eduze, kodwa izibuko ezinjalo zokufunda zizoba nokungaboni kahle nokugxumagxuma, futhi ukugqoka isikhathi eside kuthambekele kakhulu ekubuhlungu kwamehlo, isiyezi. , njll., umklamo wasekhaya awubukeki kahle, futhi awuvamile manje; i-asymptotic multifocal lens ingahlangabezana nezidingo zokubona okufiphele emabangeni ahlukene ebangeni, phakathi nendawo naseduze. Ukubukeka kuwubuchwepheshe obuphezulu futhi kusemfashinini, futhi kufaneleka kakhulu ku-myopia yesimanje engaphezu kweminyaka engama-40. I-Eye plus presbyopia, ukugqokwa kweqembu le-astigmatism.
Okwesibili, izimo zesicelo zokufunda izibuko
I-Presbyopia iyisimo esivamile sokuphila, hhayi isifo samehlo, futhi akuyena nje umuntu omdala. Ngemva kweminyaka engu-40, ngokuqina kancane kancane kwemicu yamakhemikhali yelensi yamehlo kanye nokuba ndikindiki kancane kancane komzimba we-ciliary, iso lomuntu alikwazi ukulungisa ngokunengqondo ukubukeka kokubuka (ukuguqulwa kweradial). Kuye ngebanga phakathi kwezinto, kufanele uhambe kude lapho ubheka izinto eziseduze ngaphambi kokuba ubone ngokucacile. Isimo sawo womabili amehlo ngalesi sikhathi sibizwa ngokuthi i-presbyopia.
Uma i-presbyopia ifuna ukusebenzisa umbono weso ebangeni elijwayelekile elijwayelekile, kuyadingeka ukuthi ugqoke izibuko zokufunda ukuze ugcwalise umbono wamehlo, ukuze ukubona okuseduze kuphinde kubonakale ngokucacile. Amehlo amabili. Izinga le-myopia ku-presbyopia lihlobene nobudala. Ngokukhula kweminyaka, ukuwohloka kwe-lens yamehlo kuzokhula, futhi izinga le-myopia lizokhula kancane kancane.
I-Presbyopia isivele yenzekile, futhi uma uphikelela ukuthi ungagqoki izibuko zokufunda, umzimba we-ciliary uzophelelwa amandla futhi ungakwazi ukulungisa, okuzokwenza kube nzima nakakhulu ukufunda, kubangele isiyezi, isiyezi kanye nezinye izifo eziningi, ezizobeka impilo yansuku zonke engozini futhi umsebenzi. Ukuzethemba okuphezulu. Ngakho-ke, izibuko ze-presbyopia kufanele zihambisane ngokushesha ngaphandle kokulibala (abantu baseShayina banombono ongalungile: bacabanga ukuthi ukugqoka izibuko zokufunda "kuyisifo" esibi kakhulu, futhi abaqapheli ukuthi kukhona izibuko zokufunda. Lona umbono ongalungile) .
Ngemva kokukhula, izibuko zokufunda ezazifakwe i-myopia enganele kufanele zishintshwe ngokushesha. Ngakho-ke, izibuko zokufunda akufanele zigqokwe ngaso sonke isikhathi. Ukugqoka isikhathi eside izibuko zokufunda ngezinga elingafanele le-myopia ngeke nje kubangele izinkinga eziningi zokuphila kwansuku zonke komuntu, kodwa futhi kuqhubeke nokusheshisa inqubo ye-binocular presbyopia.
Ngaphansi kwezimo ezijwayelekile, kunezibonakaliso ezimbili eziyinhloko ze-presbyopia esigabeni sokuqala:
Esokuqala umsebenzi oseduze noma ukufunda okunzima. Isibonelo, lapho ufunda, kufanele ubambe incwadi kude, noma kufanele ufunde endaweni enemithombo yokukhanya enamandla ukuze uyibone.
Okwesibili ukukhathala kwamehlo. Ngokuncishiswa kwamandla okuhlala, izidingo zokufunda kancane kancane zisondela emkhawulweni wamandla okuhlala, okungukuthi, lapho kufundwa, ngokuyisisekelo wonke amandla okuhlala awo womabili amehlo kufanele asetshenziswe, ukuze kungenzeki ukusebenzisa amehlo isikhathi eside, futhi kulula kakhulu ukubangela ukuvuvukala kwamehlo ngenxa yokulungiswa ngokweqile. , ikhanda kanye nezinye izimpawu zokukhathala okubukwayo.
Ukwenzeka kwalezi zimo ezimbili ezingenhla kubonisa ukuthi amehlo angase aguge kancane kancane. Kumaqembu e-myopic, kuyadingeka ukukhipha izibuko ze-myopic noma ukulungisa incwadi yokufunda kude lapho ufunda ebangeni eliseduze, okubuye kube ukubonakaliswa okuyinhloko kwe-presbyopia. Ngemuva kokuthi womabili amehlo e-presbyopic, indlela ephephile ukugqoka izibuko zokufunda ezifanele ukuze ulinganise.
Isikhathi sokuthumela: Aug-09-2022