How to Measure Your Pupillary Distance for Your Glasses

All of us have different distances between the two eyes. The distance between the centers of pupils of both eyes is called as pupillary distance (PD) or inter-pupillary distance (IPD). This distance is important when you want to use glasses for sight. The power of the lens in the glasses is not equally distributed. It is usually more in the center and lesser in the periphery of the lens. Therefore, the alignment of the center of [...]