BCLEAR 1.56 Refractive Index Flat Top Prescription Bifocal Lenses for Distance and Near Vision

1.56 Flat Top Spectacle Prescription Bifocal Lenses for Distance and Near VisionPlease give us your prescription like this.Format 1: sph cyl axis ADDOD/Right +2.00 -1.00 75 +1.50OS/Left +1.00 -0.50 130 +1.50PD: 63 mmRight sph +2.00 cyl -1.00 axis 75 ADD +1.50, Left sph +1.00 cyl -0.50 axis 130 ADD+1.50, PD 63Format 2: sph cyl axisOD/Right (far) +2.00 -1.00 75OS/Left(eye) +1.00 -0.50 130OD/Right (near) +3.50 -1.00 75OS/Left(near) +2.50 -0.50 130PD: 63 mmPrescription Format:Please send us your prescription paper in the order detail page, or please write your prescription there as follows:Note: Remember to write the symbol "+" or "-".What is PD?