How often are the glasses or contact lenses worn:Find:Pt:^Patient:Ord:PhenX
how often are the glasses or contact lenses worn:find:pt:^patient:ord:phenx
How often are the glasses or contact lenses worn:Finding:To identify measures at a point in time:^Patient:Ordinal:PhenX
how often are the glasses or contact lenses worn:finding:to identify measures at a point in time:^patient:ordinal:phenx