Pupillary distance (PD) also describes the distance between the two pupils, but is an optometric term used to specify prescription eyewear.
distance education | 2012 World Single Distance Speed Skating Championships | National University of Distance Education | Philippine Long Distance Telephone Company | middle-distance running | Kingdom Hearts 3D: Dream Drop Distance | Distance education | Distance | women's 1000 metres distance | Pupillary distance | Minimum distance | Mahalanobis distance | Hausdorff distance | Hamming distance | European long-distance paths | Euclidean distance | distance | 2013 World Single Distance Speed Skating Championships – Women's 1000 metres | 2012 World Single Distance Speed Skating Championships – Men's 500 metres | View near Harrow on the Hill, spire of St Mary's Church visible in the distance. Francis Jukes | University of Distance Education, Yangon | Unit distance graph | Touching From a Distance | Striking Distance | Minimum distance estimation | Middle-distance running | Long Distance Runaround | Kendall tau distance | Keep Your Distance | Genetic distance |