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1.56 I-Bifocal Flat top / Round Top / Iilensi ze-HMC ezixutyiweyo
Iilensi zeBifocals ziilensi zemiboniso eziqulathe zombini iindawo zokulungisa kwaye zisetyenziselwa kakhulu ukulungiswa kwe-presbyopia. Indawo apho ii-bifocals zilungisa khona umbono okude ibizwa ngokuba yindawo yombono okude, kwaye indawo elungisa indawo yombono okufutshane ibizwa ngokuba yindawo yombono okufutshane kunye nendawo yokufunda. Ngokwesiqhelo, indawo ekude inkulu, ngoko ke ikwabizwa ngokuba sisilayi esiphambili, kwaye indawo ekufutshane incinci, ibizwa ngokuba sisilayi esincinci.
