eyesize

eyesize

The horizontal dimension of the lens opening of a frame which is bounded by two vertical lines at a tangent to the left and right sides of the opening. See spectacle frame markings.
References in periodicals archive ?
Although this is not a frequent request, given the broad range of frames at the practitioner's disposal, custom design may be required if the patient has abnormal facial characteristics, such as a broken nose, a facial prosthesis, or they simply require a copy of a frame in a non-standard colour, eyesize or bridge fitting.