Njengoko sikhula, i-lens, inkqubo yokugxila yamehlo ethu, iqala ukuqina ngokukhawuleza kwaye ilahlekelwe ukunyameka kwayo, kwaye amandla ayo okulungelelaniswa aqala ukuba buthathaka ngokuthe ngcembe, okukhokelela kwinto eqhelekileyo ye-physiological: presbyopia. Ukuba indawo ekufutshane ingaphezulu kwe-30 yeesentimitha, kwaye izinto azibonakali ngokucacileyo kwiisentimitha ezingama-30, kwaye kufuneka usondeze kude ukuze ubone ngokucacileyo, kufuneka ucinge ngokunxiba iindondo ze-presbyopic.
Ngeli xesha sifunda malunga neeglasi ezininzi eziqhubekayo kwi-presbyopia optics. Xa i-presbyopia isenzeka, kuyadinisa ngakumbi ukubona, kuba iliso lomntu likwimo epholileyo xa lijonge kude, kwaye kufuneka kugxilwe kakhulu xa ujonge kufutshane. Nangona kunjalo, amandla okulungelelaniswa kwe-lens ye-presbyopic ayinamandla, kwaye ugxininiso alunamandla ngokwaneleyo xa ukhangele ngokusondeleyo, okuya kwandisa umthwalo emehlweni. , iimpawu ezifana nokuqaqamba kwamehlo, ukungaboni kakuhle, kunye nentloko yimpawu eziqhelekileyo.
Umgaqo weelensi ezininzi eziqhubekayo
Umgaqo-siseko woyilo lweelensi ezininzi kukudala iindawo ezininzi eziqhubekayo ezikude, eziphakathi kwaye zikufutshane nembonakalo kwilensi enye. Ngokubanzi, indawo engaphezulu yelensi yeyamandla aphinda-phindwayo, indawo engezantsi yeyamandla akufuphi aphinda-phinda, kwaye indawo esembindini yelensi yindawo yokuthambeka ethi ngokuthe ngcembe igqithise amandla aphinda-phindayo. Iziko elikufutshane le-optical lens ezininzi ze-multifocal lens yi-10-16 mm ngaphantsi kweziko elikude kunye ne-2-2.5 mm nasally. Kufuneka kuqatshelwe ukuba kukho iindawo zokuphambuka kumacala omabini ommandla oqhubekayo. Xa umgca wokubona uhambela kule ndawo, into ebonakalayo iya kuphazamiseka, okwenza kube nzima kwaye kungabonakali.
Uzisebenzisa njani iilensi ezininzi eziqhubekayo
Iilensi ezininzi eziqhubela phambili ngokuthe ngcembe zonyusa amandla ukusuka phezulu ukuya ezantsi, kwaye zibonelele ngeendawo ezintathu ezifihlakeleyo zelensi eziqhubekayo, ezigquma ukude, okuphakathi, kunye nombono okufutshane, zigqithisa ngokucacileyo imbonakalo kwimigama eyahlukeneyo. Xa unxiba iiglasi ze-multifocal eziqhubekayo okokuqala, intsimi yombono kumacala omabini eelensi inokugqweswa kwaye igqwethwe. Xa indawo yesakhelo ishukuma okanye ijike, inokubangela ukungakhululeki kunye nokubona luzizi. Landela amanyathelo "zola kuqala kwaye emva koko uhambe, kuqala ngaphakathi nangaphandle" ukuziqhelanisa ngokuthe ngcembe kwaye uziqhelanise.
01. Indawo yelensi yeTelephoto
Xa uqhuba okanye ujonge, gcina isilevu sakho singaphakathi kancinci, gcina intloko yakho ithe tyaba, kwaye ujonge embindini welensi phezulu kancinci.
02. Indawo yelensi ephakathi
Xa uqhuba okanye ujonge, gcina isilevu sakho singaphakathi kancinci, gcina intloko yakho ithe tyaba, kwaye ujonge embindini welensi phezulu kancinci. Ungayihambisa intamo yakho kancinci phezulu naphantsi de umfanekiso ucace.
03. Indawo yelensi yokuvala
Xa ufunda incwadi okanye iphephandaba, yibeke ngqo phambi kwakho, wandise isilevu sakho phambili, kwaye uhlengahlengise ukujonga kwakho ezantsi kwindawo efanelekileyo yesipili.
04. Indawo yesipili esiluzizi
Kukho iindawo kumacala omabini e-lens apho ukukhanya kutshintsha, kwaye intsimi yombono iya kuba mnyama. Oku kuqhelekile.
05. Iingcebiso:
Ukunyuka nokuhla ngezinyuko: Nciphisa intloko yakho kancinci kwaye ujonge phantsi, kwaye ulungelelanise umbono wakho ukusuka kwindawo ekufuphi yesipili ukuya kwindawo yesibuko esiphakathi okanye eside.
Ukuhamba yonke imihla: Ukuba ukufumanisa kunzima ukugxila, zama ukujonga imitha enye ngaphambili ukuze ulungelelanise ugxininiso. Nceda uthobe intloko yakho kancinci xa ujonge phezulu.
Ukuqhuba okanye ukusebenzisa oomatshini: Ukuba ufuna ukujonga ukusuka kude ukuya kufutshane, emacaleni okanye kwii-engile ezininzi ngelixa usebenza, nceda ukwenze oko kuphela emva kokuba uziqhelile ngokupheleleyo iilensi eziqhubekayo.
Ixesha lokuposa: Dec-01-2023