RT Journal Article T1 Eye movements as a predictor of preference for progressive power lenses A1 Concepción Grande, Pablo A1 González Dosal, Amelia A1 Cleva Millor, José Miguel A1 Alonso Fernández, José A1 Gómez Pedrero, José Antonio A1 Chamorro Gutiérrez, Eva AB AbstractThe purpose of this study is to determine if there is any correlation between the characteristics of the user’s eye movements (EMs) and the preference of the user when wearing different Progressive power lenses (PPLs) distributions. An eye-tracker system with a sample rate of 120Hz and temporal resolution of 8.3ms (Tobii-X3-120) was used to register EMs of 38 PPL users when reading in a computer screen with 2 types of PPLs (PPL-soft and PPL-hard). Number of fixations, complete fixation time, fixation duration mean, saccade duration mean, saccade distance mean, and number of regressions were analyzed for 6 different regions of the computer screen. A statistically significant difference was observed between the characteristics of the user’s EMs and the user’s PPL subjective preference (p<0.05*). Subjects that preferred the PPL-hard presented significantly lower complete fixation time, lower fixation duration mean and lower number of regressions than those subjects indicating a preference for the PPL-soft. Results of this study suggest that eye-tracking systems can be used as PPL design recommendation systems according to the user EMs performance. PB Bern Open Publishing SN 1995-8692 YR 2022 FD 2022-06-30 LK https://hdl.handle.net/20.500.14352/72975 UL https://hdl.handle.net/20.500.14352/72975 LA eng DS Docta Complutense RD 3 may 2024