Iilensi zefotochromic zikwabizwa ngokuba zii "photosensitive lens".Ngokomgaqo wokusabela okubuyisela umva wokutshintsha kombala okhanyayo, ilensi inokukhawuleza ibe mnyama phantsi kokukhanya kunye nemitha ye-ultraviolet, ithintele ukukhanya okuqinileyo kwaye ifunxe ukukhanya kwe-ultraviolet, kwaye ibonise ukungathathi hlangothi ekukhanyeni okubonakalayo.Ukubuyela ebumnyameni, kunokubuyisela ngokukhawuleza imeko ecacileyo engenambala, ukuqinisekisa ukuhanjiswa kwelensi.Ngoko umbala oguqula i-lens ufanelekile ukusetyenziswa kwangaphakathi nangaphandle ngexesha elifanayo, ukukhusela ukukhanya kwelanga, ukukhanya kwe-ultraviolet, ukukhanya kwiliso lomonakalo.
Iithegi:1.56 ifoto yelensi, 1.56 ilensi photochromic