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1.67 Spin Photochromic Gray HMC Optical lenses
Lilense tse fetolang mebala, tse tsejoang hape e le "photosensitive lenses". Ho ea ka molao-motheo oa photochromatic tautometry reversible reaction, lense e ka fifala ka potlako tlas'a mahlaseli a khanyang le a ultraviolet, ea thibela khanya e matla 'me ea monya leseli la ultraviolet,' me ea bontša ho se nke lehlakore ha leseli le bonahalang. Ho khutlela lefifing, ho ka khutlisa kapele boemo bo hlakileng bo se nang mebala, ho netefatsa phetiso ea lense. Ka hona, lilense tse fetolang mebala li loketse ho sebelisoa ka hare le ka ntle ka nako e le 'ngoe ho thibela tšenyo ea khanya ea letsatsi, khanya ea ultraviolet le mahlaseli a mahlo.
