-
Lilense tsa mahlo tsa HMC tse nang le porgressive tse 1.56
Lense e tsoelang pele ke lense e bolelele ba li-focal tse ngata, e fapaneng le likhalase tsa ho bala tsa setso le likhalase tsa ho bala tsa bifocal. Lilense tse tsoelang pele ha li na mokhathala oa mahlo o lokelang ho fetola bolelele ba focal khafetsa ha li sebelisa bolelele ba bifocal, 'me ha ho na mola o totobetseng pakeng tsa mola oa moeli oa bolelele ba focal. E phutholohile ho e apara 'me e na le ponahalo e ntle, 'me butle-butle e fetohile khetho e ntle ka ho fetisisa bakeng sa batho ba nang le presbyopia.
