Table 5

Proposed outcomes to form the basis for a core outcome set for studies of multifocal lenses in cataract surgery

DomainSpecific measurementMethod of aggregation
Distance visual acuityLogMAR chart, with and without usual spectaclesMean
Near visual acuityLogMAR chart, with and without usual spectaclesMean
Contrast sensitivityPelli-Robson chart, with and without usual spectaclesMean
Spectacle independenceQuestionnaire, overall, distance and near separatelyProportion of people spectacle free, that is, do not need to use spectacles for any task
Quality of lifeQuestionnaire: ideally VF-7 or VF-14Mean
Visual symptoms, for example, glare haloesQuestionnaire: glare, haloes and other visual symptomsProportion of people with visual symptoms, each symptom reported separately