Loluphi uhlobo lwelensi yelensi eqhubekayo?

Okokuqala, Yintoni i-lens ye-multifocal eqhubekayo?
Ngaphezulu koku-1, ugqaliselo oluthe chu i-lens ikulensi enye kuphela kude phakathi kokukhanya kwaye iphantse iphele, ngendlela ye-dioptre yotshintsho oluthe chu, ukusuka ngokusondela ngokuthe ngcembe ekusebenziseni ufundo olukude luphele kwaye luphantse luphele kwi-organic kunye, njalo njalo. Ilensi ngaxeshanye jonga umgama, umgama ophakathi kwaye uvale ukukhanya okufunekayo okwahlukileyo.

Iilensi eziqhubekayo zineendawo ezintathu zokusebenza
Indawo yokuqala esebenzayo yindawo ekude ebekwe phezulu kwi-lens.Umgama wommandla linani leedigri ezifunekayo ukubona kude, ezisetyenziselwa ukubona izinto ezikude.
Indawo yesibini yokusebenza yindawo ekufutshane ebekwe kumda ophantsi welensi.Ukusondela linani leedigri ezifunekayo ukuze ubone izinto ezikufutshane.
Indawo yesithathu yindawo ephakathi edibanisa ezi zimbini.Ibizwa ngokuba yi-gradient area, ethi ngokuthe ngcembe itshintshe iqondo lokujonga kude ukuya kwinqanaba lokujonga kufutshane, ukuze ukwazi ukuyisebenzisa ukubona izinto ezikumgama ophakathi.Ngokwembonakalo, iilensi ezininzi eziqhubekayo azibonakali kwiilensi eziqhelekileyo.

Zimbini, zeziphi iintlobo zeelensi ezininzi eziqhubekayo?
Kwiminyaka yakutshanje, i-lens eqhubekayo ye-multifocal iye yaphuhliswa kwaye yanda ngokukhawuleza e-China.Okwangoku, ngokwendlela yokusetyenziswa kwamehlo kunye neempawu zomzimba zabantu abakubudala obahlukeneyo, uphando oluhambelanayo kwiilensi ezininzi ezigxininisekileyo lunokwahlulwa lube ngamacandelo amathathu:
1. I-lens yokulawula i-myopia yolutsha.Isetyenziselwa ukunciphisa ukukhathala okubonakalayo kunye nokulawula ukuphuhliswa kwe-myopia.
2. Iilensi zokulwa nokudinwa kwabantu abadala.Isetyenziselwa abantu abaninzi abasebenza kumgama okufutshane ukunciphisa ukudinwa okubonakalayo okubangelwa ngumsebenzi.
3. Iilensi eziqhubekayo kubantu abaphakathi kunye nabantu abadala.Iperi yeglasi kubantu abaneminyaka ephakathi kunye nabantu abadala banokubona ngokulula kude nakufuphi, ukuze amehlo akho afumane imvakalelo yolutsha.

Okwesithathu, Yintoni umsebenzi welensi ye-multifocal eqhubekayo?
(1) Ukunciphisa ukudinwa okubonakalayo kunye nokulawula isantya sophuhliso lwe-myopia, kodwa ayingabo bonke abafikisayo abafanelekileyo ukuba banxibe iiglasi ze-multifocal eziqhubekayo, inani labantu lilinganiselwe kakhulu, i-lens inefuthe elithile kuphela ekuhlengahlengisweni kwe-lag kunye ne-oblique myopia yabantwana.
Qaphela: Ngenxa yokuba uninzi lwezigulana ezine-myopia zinobugqi bangaphandle kunokuba bube nobugqwirha, inani labantu abalungele ukunxiba iiglasi ze-multifocal eziqhubekayo ukulawula i-myopia lilinganiselwe, elibalelwa kuphela malunga ne-10% yabantwana kunye nolutsha olune-myopia.
(2) Ootitshala, oogqirha, umgama osondeleyo kunye nabantu abaninzi kakhulu abasebenzisa iikhompyutha, ukwenzela ukunciphisa ukudinwa okubonakalayo okuziswa ngumsebenzi.
Kubantu abakubudala obuphakathi kunye nabasele bekhulile abaneeglasi zokujonga ngokulula ukubona kude.Ilensi ye-multifocal eqhubekayo yenzelwe ukubonelela ngendlela yendalo, efanelekileyo kunye nekhululekileyo kwizigulana ze-presbyopia ukuba zilungise.Ukunxiba ilensi eqhubekayo kufana nokusebenzisa ikhamera yevidiyo.Iperi yeglasi iyakwazi ukubona izinto ezikude, ezikufutshane nezikumgama ophakathi ngokucacileyo.Ngoko ke, sichaza iilensi eziqhubekayo njenge "lens that zoom", kwaye sinxibe iperi yeglasi ezilingana nokuhlawula ngaphezulu kweendondo.

Okwesine,Yintoni ekufuneka ndiyithathele ingqalelo xa ndinxibe iilensi ezininzi eziqhubekayo?
(1)Xa ukhetha isakhelo sesipili, ubungakanani besakhelo singqongqo.Kuyimfuneko ukukhetha ububanzi besakhelo esifanelekileyo kunye nobude ngokomgama womfundi.
(2) Emva kokugqoka iiglasi, xa uqwalasela izinto kumacala omabini, unokufumanisa ukuba ukucaca kuncitshisiwe kwaye into ikhubazekile, into eqhelekileyo kakhulu.Ngeli xesha, kufuneka ujike intloko yakho kancane kwaye uzame ukubona ukusuka kumbindi we-lens, kwaye ukungahambi kakuhle kuya kunyamalala.
(3)Xa usihla, iiglasi kufuneka zibe ngaphantsi kangangoko ukusuka phezulu ukuze ubone ngaphandle kwendawo.
(4) I-glaucoma, ukulimala kwamehlo, isifo samehlo esibuhlungu, uxinzelelo lwegazi, i-spondylosis yomlomo wesibeleko kunye nabanye abantu abakhuthazwa ukuba basebenzise.