Issues around discomfort and inconv

Issues around discomfort and inconveniences related to lens handling might further limit survival in lens wear and effectiveuse of contact lenses for myopia control. Infitting multifocal contact lenses for myopiacontrol, consideration needs to be given tothe fact that power variations across the optical zone might affect vision performancewhich might in turn affect compliance tolens wear. Indeed, compliance with properprocedures for lens wear was assessed andfound to be important in slowing progressionof myopia with defocus incorporated softcontact lenses.40 In this respect, visual acuitywith a dual focus lens designed for myopiacontrol was found to be effective but the subjective visual performance as reported bypatients was less compared to habitualvision.In non-presbyopic myopic participants, lenses featuring multifocality werefound to decrease visual performance, in particular when power variations across the opticzone were large or when the lens wasdecentred.