Uyini umehluko phakathi kwe-single vision, bifocal and progressive?

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1,Umbono owodwa:

Umbono owodwakuhlanganisa ibanga, ukufunda kanye Plano.

Izibuko zokufunda zingasetshenziswa ukubuka ifoni yesandla, ikhompuyutha, ukubhala nokunye.Lezi zibukozisetshenziselwa ukubona izinto eziseduze ngokukhethekile, ezingenza indawo yokuhlala yamehlo ikhululeke futhi ingakhathali kangako.
Izibuko zebanga zingasetshenziselwa ukushayela, ukugibela, ukugijima kanye neminye imisebenzi yangaphandle.Lezi zibukozisetshenziselwa ukubona ibanga elicacile ngokukhethekile.

Ngakho kukhona izibuko ukuhlukanisa ibanga nokufunda.

Izibuko ze-Plano ziyizibuko ngaphandle kwencwadi kadokotela, ezingasetshenziselwa ukuvikela umoya nesihlabathi kuphela, noma ukubukeka okuhle.

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2,I-Bifocal

Umklami uklame ubude bokugxila obungaphezulu bamalensi ukuze akwazi ukubona izinto ezingaphezu kwamamitha angu-3, ​​kuyilapho ingxenye engezansi yayiklanyelwe ukubuka izinhlamvu eziseduze zesigcawu.Lo mklamo wenza ogqoke izibuko akwazi ukubona ibanga/eduze kwezinto ezahlukene.Akudingekile ukukhumula izibuko, okunikeza ukukhululeka okukhulu kubantu be-presbyopia.

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3. Abathuthukile

Ilensi eqhubekayoiwuhlobo lwamalensi olukwazi ukubona kude naseduze.Kunezifunda ezimbili eziyinhloko zokukhanya ekwakhiweni okuqhubekayo ku-chip.Ingxenye engezansi ephakathi kwekhala yindawo eseduze;Ukuqhubeka kwezithombe ezibukwayo kufinyelelwa ngesifunda soguquko phakathi kwesifunda esibukeka kude kanye nesifunda esiseduze.Ngaphezu kwesidingo sokuthi ogqokile asuse izibuko lapho ebuka izinto ezikude/eziseduze, ukunyakaza kweso phakathi kobude obugxile obuphezulu naphansi nakho kuyaqhubeka.Okubi kuphela ukuthi kukhona amadigri ahlukene okuhluka okweqile kwesithombe kuzo zombili izinhlangothi zocezu oluqhubekayo, okuzodala umuzwa wokwanda kokubona okuzungezile.

I-Progressives ihlinzeka ngoshintsho olushelelayo ukusuka ebangeni ukuya maphakathi ukuya eduze, nakho konke ukulungisa okuphakathi nakho kufakiwe.Ungabheka phezulu ukuze ubone noma yini ekudeni, ubheke phambili ukuze ubuke ikhompuyutha yakho endaweni emaphakathi, bese uphonsa amehlo akho phansi ukuze ufunde futhi wenze umsebenzi omuhle ngokunethezeka endaweni eseduze.Okusho ukuthi, ama-lens aqhubekayo asondelene kakhulu nendlela yokubona kwemvelo ukuthi ungathola izibuko zamehlo ezinikezwe udokotela.

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Isikhathi sokuthumela: Feb-18-2022