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

• Published in: Clinical and experimental optometry 2023-01, Vol.106 (1), p.69-74
• Main Authors: Garcia-Espinilla, Oscar, Gallegos-Cocho, Ines, Sanchez, Irene, Cañadas, Pilar, Martin, Raul
• Format: Article
• Language: English
• Subjects: Agreements; Eye; Humans; Ophthalmic lenses adaptation; Physiognomy; presbyopia management; progressive addition lenses; Reproducibility of Results; Vision, Ocular
• ISSN: 0816-4622; 1444-0938
• DOI: 10.1080/08164622.2021.2006042

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. The aim of this study is to describe interdevice agreement between different methods and traditional methods (frame ruler). 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. Frame ruler nasopupillary distance measurements showed limited agreement with PD-5 [−0.38 ± 1.03 (LoA −2.40 to 1.64) and 0.44 ± 1.02 (LoA −1.72 to 2.61)] and Visioffice [0.62 ± 1.24 (LoA −1.81 to 3.05) and −0.16 ± 1.72 (LoA −3.54 to 3.22)] measurements for the right and left eyes, respectively. Poor agreement was found for interpupillary distances (PD-5 [0.21 ± 1.47 (LoA −2.67 to 3.09)], OptiCenter [−0.05 ± 1.16 (LoA −2.32 to 2.22)] and Visioffice [0.46 ± 1.95 (LoA −3.36 to 4.28)]), fitting point height (OptiCenter [−1.27 ± 2.56 (LoA −6.27 to 3.75) and −0.92 ± 2.77 (LoA −6.35 to 4.51)] and Visioffice [−5.88 ± 6.21 (LoA −18.05 to 6.29) and −5.98 ± 6.12 (LoA −17.98 to 6.02)] for the right and left eyes, respectively) and pantoscopic and frame wrap angles (OptiCenter [−4.13 ± 3.75 (LoA −11.48 to 3.22) and −1.09 ± 0.60 (LoA −2.27 to 0.09)] and Visioffice [−6.18 ± 3.53 (LoA −13.10 to 0.74) and −1.93 ± 3.49 (LoA −8.77 to 4.91)], respectively). These results suggest that measurements of physiognomy and frame angles are not interchangeable between assessed devices and that these differences could induce lens centration errors with a large impact on progressive addition lens prescriptions.