Product Code: 4147Description: ZYL Top 45Frame Colour: CrystalDioptres: +4.00DPrism / Lens: OU6 ^ B10U4147 Aspheric Prismatic Half-Eye SpectaclesPart No:4147 Technical SpecificationsDescription: ZYL Top 45 Frame Colour: Crystal Dioptres: +4.00D Prism / Lens: OU6 ^ B10U