Abstract: An optical measurement device including a frame to be supported by the nose and ears of a wearer, right and left lenses set within the frame, a pair of adjustable right and left lenses set within quiescent position a fixed distance above a bottom edge of the lenses measured vertically, and an orthogonal grid on a surface of each of the lenses extending both vertically and horizontally, all allowing X and Y coordinate information of pupil location to be determined according to wearer comfort position, in facilitating the on-line ordering of eyewear products.