PD-400 Digital PD Meter Lensmeter Accessories This is a non-ionic solution

This is a non-ionic solution which is non-corrosive

000 openings and a magnetic closure that keeps your lens securely stored within the case

5 V power handles and wall transformers

also known as Fresnel Prisms

Long-lasting lithium battery will last approximately 15

PD-400 Digital PD Meter Lensmeter Accessories This is a non-ionic solutionThe PD 400 digital PD meter features a high definition camera that significantly reduces visual errors typically caused by monocular observation by the optometrist. It allows simultaneous adjustment of both eyes' pupillary distance (PD), enhancing measurement efficiency. For energy conservation, the device automatically enters sleep mode after 30 seconds of inactivity and powers off completely after 4 minutes without operation. Redefine the way of