Interdevice agreement in the measurement of physiognomy parameters and frame angles to prescribe progressive addition lenses.

Clinical Relevance: Ophthalmic lens adaptation requires accurate measurements of physiognomy parameters and frame angles, with a great impact on subject vision, especially when personalised progressive addition lenses are prescribed.

Background: The aim of this study is to describe interdevice agreement between different methods and traditional methods (frame ruler).

Methods: The agreement of the interpupillary distance, nasopupillary distance and fitting point height measured with four devices (PD-5, OptiCenter, Visioffice and a frame ruler) and of pantoscopic and frame wrap angles measured with three devices (OptiCenter, Visioffice and Essilor standard ruler) was assessed in 21 healthy volunteers, by a Bland-Altman analysis; mean difference and limits of agreement (LoA) were calculated.

Comparison of physiognomy and frame angle parameters using different devices to prescribe progressive addition lenses.

Clinical Relevance: Accurate measurement of several physiognomy parameters (interpupillary, nasopupillary and fitting height distances) and frame angles (pantoscopic and frame wrap angles) is essential for prescribing progressive addition lenses for presbyopic patients.

Background: Few reports have described the repeatability of different devices commonly used to conduct essential measurements for prescribing progressive addition lenses.

Methods: Interpupillary, nasopupillary (at far and near distances) and fitting point heights were measured three consecutive times in 21 healthy volunteers with four devices (traditional frame ruler, PD-5 interpupilometer, OptiCenter, and VisiOffice).