文摘
Retention rate for CL neophytes was 74% (sphere 78%, toric 73%, multifocal 57%). A high proportion of those lapsing did so during the first two months of wear (47%). Handling and comfort were key performance reasons for new wearers lapsing. Visual problems were the key reason new toric and multifocal wearers discontinued. In a third of cases, the reasons for discontinuation were unknown. For 71% of dropouts, no alternative lens or management strategy had been tried. Factors associated with retention rate include lens power, material and type, and purchase frequency.