Imibandela efuna ingqalelo
①Xa uthelekisa iiglasi, ubukhulu besakhelo bufuneka ngokungqongqo xa ukhetha isakhelo.Ububanzi kunye nokuphakama kwesakhelo kufuneka kukhethwe ngokomgama womfundi.
②Emva kokugqoka iiglasi, xa uqwalasela izinto kumacala omabini, unokufumanisa ukuba inkcazo iyancitshiswa kwaye into ebonakalayo ikhubazekile, into eqhelekileyo.Ngeli xesha, kufuneka ujike intloko yakho encinci kwaye uzame ukubona ukusuka kumbindi we-lens, kwaye ukungahambi kakuhle kuya kunyamalala.
③Xa usiya kumgangatho osezantsi, iiglasi kufuneka zithotywe phantsi kangangoko kunokwenzeka ukusuka kwindawo ephezulu ukuze ubone ngaphandle.
④I-glaucoma, ukwenzakala kwamehlo, isifo samehlo esibukhali, uxinzelelo lwegazi, i-spondylosis yomlomo wesibeleko kunye nabanye abantu abakhuthazwa ukuba basebenzise.
Ngaba ukhe weva ngeendondo zokusondeza?Ukusuka kwiilensi zojoliso olunye, iilensi ze-bifocal kwaye ngoku iilensi ezininzi eziqhubekayo,
Iilensi ze-multifocus eziqhubekayo zisetyenziswe ngokubanzi kwiilensi zokulawula i-myopia kulutsha, iilensi zokulwa nokukhathala kubantu abadala kunye neelensi eziqhubekayo kubantu abaphakathi kunye nabantu abadala.Ngaba ngokwenene uyazazi iilensi ze-multifocus eziqhubekayo?
01Iindawo ezintathu ezisebenzayo zeelensi ezininzi eziqhubekayo
Indawo yokuqala esebenzayo ifumaneka kwindawo ephezulu yelens ekude.Indawo ekude liqondo elifunekayo ukubona kude, esetyenziselwa ukubona izinto ezikude.
Indawo yesibini yokusebenza ifumaneka kufuphi nomda ophantsi welensi.Indawo ekufutshane liqondo elifunekayo ukuze ubone kufutshane, elisetyenziselwa ukubona izinto zivaliwe.
Indawo yesithathu esebenzayo yindawo ephakathi edibanisa ezimbini, ebizwa ngokuba yi-gradient area, ethi ngokuthe ngcembe kwaye ngokuqhubekayo itshintshe ukusuka kumgama ukuya kufuphi, ukuze ukwazi ukuyisebenzisa ukubona izinto ezimgama ophakathi.
Ukusuka ngaphandle, iilensi ze-multifocus eziqhubekayo azifani kwiilensi eziqhelekileyo.
02Impembelelo yeelensi ezininzi eziqhubekayo
① Iilensi ze-multifocus eziqhubela phambili ziyilelwe ukubonelela izigulana nge-presbyopia ngendlela yendalo, efanelekileyo kunye nekhululekileyo yolungiso.Ukunxiba iilensi eziqhubekayo kufana nokusebenzisa ikhamera yevidiyo.Iperi yeglasi inokubona zombini ezikude nakufuphi, kunye nezinto ezikumgama ophakathi.Ngoko ke sichaza iilensi eziqhubekayo njenge "zoom lens", iperi enye yeglasi ilingana neeperile ezininzi zeendondo.
② Ukucothisa ukudinwa okubonakalayo kunye nokulawula izinga lophuhliso lwe-myopia, kodwa ayingabo bonke abakwishumi elivisayo abakulungeleyo ukunxiba iiglasi ezigxininisiweyo eziqhubekayo, isihlwele sincinci kakhulu, i-lens inefuthe elithile kuphela ekulungiseni i-lag kunye ne-oblique myopia yabantwana. .
Qaphela: Njengoko uninzi lwezigulana ze-myopia zine-oblique yangaphandle kune-oblique yangaphakathi, inani labantu abalungele ukunxiba iiglasi ezigxininisiweyo eziqhubekayo ukulawula i-myopia lilinganiselwe, libalelwa kwi-10% kuphela yabantwana kunye ne-myopia yolutsha.
③ Iilensi eziqhubela phambili zisenokusetyenziswa ukukhulula ukudinwa okubonakalayo kubantu abancinci nabaphakathi.Njengomqolo woluntu, ukukhathala kwamehlo kwabancinci nabaneminyaka ephakathi kuyafaneleka ngakumbi ukuqwalaselwa.Iilensi eziqhubela phambili zinokufana neelensi ezichasene nokudinwa ukukhulula ukudinwa okubonakalayo kubasebenzisi beekhompyuter, kwaye zinokusetyenziswa njengeelensi zokutshintsha ukuze kuqinisekiswe umbono omde, ophakathi kunye nokufutshane ogxile kwizinto ezininzi kwixesha elizayo.
03Ukukhetha iiglasi ezininzi eziqhubekayo
Iimfuno zemilo
Kuphephe ukukhetha iifreyimu ezine-bevel enkulu yeempumlo kuba indawo ekufutshane yezakhelo ezinjalo incinci.
Iimfuno zezinto eziphathekayo
Kungcono ukuba ungakhethi iiplate kunye nezakhelo ze-TR ngaphandle kweempumlo zempumlo.Oku kungenxa yokuba umgama okufutshane weliso lezakhelo zincinci kakhulu (kufuneka zigcinwe malunga ne-12mm ngokwesiqhelo), iliso elikufutshane alikwazi ukufikelela kwindawo ekufutshane yokusetyenziswa ngokuqhelekileyo, kwaye kunzima ukunyenyisa ukuthambeka. I-engile yeeglasi.
Ubungakanani besicelo
Umphakamo othe nkqo ohambelana nendawo yomfundi wesakhelo kufuneka ufezekise ngokubanzi iimfuno ezichazwe yimveliso, ngokubanzi enkulu okanye elingana neemfuno ze-16MM+ ubude betshaneli.Ukuba kukho iimfuno ezikhethekileyo, kufuneka ubhekisele kwiimfuno zelensi ukukhetha ubungakanani obufanelekileyo besakhelo.
Iimfuno zokusebenza
Iifreyimu ezinozinzo oluhle kufuneka zikhethwe ukuphepha ukuguqulwa rhoqo kweeglasi ezichaphazela iimfuno zokusetyenziswa.Iiglasi zingagcinwa kwi-engile ye-10 ukuya kwi-15 degrees.Ubuso obugobileyo besakhelo kufuneka buhambelane neecontours zobuso bomntu onxibileyo.Ubude, i-radian kunye nokuqina kwesibuko zifanelekile ukugqoka okuqhelekileyo.
Ixesha lokuposa: Jul-20-2022