Horizontal prism.out near for Percival:InvLen:Pt:Eye:Qn:Phoropter
horizontal prism.out near for percival:invlen:pt:eye:qn:phoropter
Horizontal prism.out near for Percival:Inverse Length:To identify measures at a point in time:Eye:Quantitative:Phoropter
horizontal prism.out near for percival:inverse length:to identify measures at a point in time:eye:quantitative:phoropter