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Iilensi ze-HMC Optical ezi-1.59 zePC eziluhlaza okwesibhakabhaka ezisikiweyo zeBifocal Invisible Photochromic Gray
Njengoko igama lisitsho, isibuko se-bifocal sinokukhanya okumbini. Ngokuqhelekileyo, sisetyenziselwa ukubona umgama, njengokuqhuba nokuhamba ngeenyawo; Oku kulandelayo kukubona ukukhanya okukufutshane, ukubona okukufutshane, njengokufunda, ukudlala ifowuni ephathwayo njl. Xa ilensi ye-bifocal isandula ukuphuma, yayithathwa njengeVangeli le-myopia + i-presbyopia, isusa ingxaki yokuguguleka rhoqo, kodwa njengoko abantu besebenzisa, kufunyaniswe ukuba ukusilela kwelensi ye-bifocal nako kunezinye ezininzi.
