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Site na mmụba na-aga n'ihu nke ihe ndị na-azụ ahịa chọrọ, a na-ejikwa nwayọọ nwayọọ na-emeziwanye ihe ndị mmadụ chọrọ maka anya anya anya, n'otu oge ahụ, ihe ụwa chọrọ maka anya anya anya na-esiwanye ike.Kedu ka esi amata akara njirimara ya ngwa ngwa?Taa, anyị ga-eleba anya n'ụkpụrụ oghere anya anya yana ihe achọrọ akara metụtara n'ọtụtụ mba.

European Union
European Union chọrọ ka lensị anya anya ga-agbasorịrị iwu nke ngwaọrụ ahụike (EU) 2017/745 wee nweta asambodo dịka tozuru oke.Iji banye n'ahịa EU nke ọma, enwere ike ịgbakwunye akara "CE".
Britain
Mgbe Brexit gachara, Great Britain chọrọ ka lenses anya ga-agbasorịrị iwu nke ngwaọrụ ahụike mpaghara 2002 wee nweta ikike iru eru tupu ị gbakwunye akara “UKCA” iji banye n'ahịa mpaghara nke ọma.
United States
Na United States, a na-achịkwa lensị anya anya dị ka ngwaọrụ ahụike, na ịdịmma ha ga-emezurịrị ihe Federal Food and Drug Administration (FDA) chọrọ (21 CFR 801.410) tupu ebubata ha.
China
Ahịa ụlọ kwesịrị imezu ihe achọrọ GB/T 38005-2019 ọkọlọtọ.
Ntụle arụmọrụ ngwaahịa EURtek -- asambodo arụmọrụ maka ndị na-azụ ahịa ka ha ghọta na ilele.Ndị na-emepụta oghere anya anya nwere ike ịkọwapụta njirimara arụmọrụ nke ngwaahịa nke ha na akwụkwọ a iji gosipụta ihe dị iche iche nke ngwaahịa, iji kwalite ebe ire ngwaahịa.