## 3 Results
### Visual Function  
The visual function parameters' descriptive statistics and the K-MoCA correlation results are presented on the left side of Table 4. The factor loadings respective to the parameters that make up visual PCs, and their K-MoCA correlation results, are presented on the right side of Table 4. Apart from the CSC at a 3 m distance, none of the variables were significantly correlated to the cognitive score.  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Parameter** & **MEAN (SD)** & **R2 (\(p\)-Value)** & **PC** & **Loading** & **R2 (\(p\)-Value)** \\ \hline DLS (\%) & 21.6 (2.3) & 0.004 (0.370) & & 0.963 & \\ PS (\%) & 11.1 (1.4) & 0.004 (0.378) & & 0.902 & \\ SLS (\%) & 39.5 (1.3) & 0.001 (0.583) & Gait cycle & \(-\)0.832 & 0.001 (0.661) \\ LR (\%) & 10.5 (1.2) & 0.006 (0.283) & & 0.827 & \\ SV (\%) & 38.9 (1.5) & 0.003 (0.420) & & \(-\)0.754 & \\ \hline DLS CoV & 4.2 (5.6) & 0.007 (0.217) & & 0.970 & \\ PS CoV & 5.4 (8.2) & \textless{}0.001 (0.810) & & 0.931 & \\ LR CoV \({}^{*}\) & 5.6 (4.1) & 0.022 (0.034) & Gait cycle variation & 0.852 & 0.012 (0.114) \\ SLS CoV & 2.0 (1.8) & 0.004 (0.358) & & 0.829 & \\ SW CoV & 2.1 (2.6) & 0.009 (0.163) & & 0.538 & \\ \hline Swing duration CoV & 2.6 (2.9) & 0.002 (0.481) & - & - & - \\ \hline Swing duration (ms) & 417.4 (25.0) & 0.007 (0.264) & & 0.929 & \\ Stride duration (ms) & 1075. 8 (82.7) & 0.011 (0.138) & Gait rhythm & 0.886 & \\ Cadence (steps/min) & 112.2 (8.2) & 0.011 (0.136) & & \(-\)0.879 & \\ Stance duration (ms) & 658.5 (62.6) & 0.012 (0.118) & & 0.804 & \\ \hline Stride duration CoV & 1.9 (1.4) & 0.017 (0.064) & & 0.943 & \\ Cadence CoV & 1.5 (1.1) & 0.017 (0.062) & Gait rhythm & 0.941 & \\ Stance duration CoV \({}^{*}\) & 2.5 (1.9) & 0.027 (0.019) & variation & 0.861 & \\ Velocity CoV & 2.6 (2.0) & \textless{}0.001 (0.819) & & 0.722 & \\ \hline Step Length (cm) & 64.7 (7.0) & 0.033 (0.066) & & 0.884 & \\ Stride Length (cm) \({}^{*}\) & 127.0 (12.7) & 0.040 (0.041) & Gait pace & 0.877 & 0.016 (0.073) \\ Velocity (cm/s) & 119.1 (17.0) & 0.033 (0.065) & & 0.685 & \\ \hline Step Length CoV & 2.3 (1.3) & 0.001 (0.653) & & 0.828 & \\ Stride Length CoV & 1.8 (1.2) & 0.002 (0.521) & Gait pace variation & 0.767 & 0.001 (0.617) \\ \hline TS (\%) & 19.1 (2.4) & 0.007 (0.235) & & 0.951 & \\ MS (\%) & 20.5 (2.5) & 0.007 (0.235) & Midstance & 0.936 & 0.006 (0.266) \\ \hline MS CoV & 10.3 (6.2) & 0.003 (0.437) & Midstance & 0.884 & \\ TS CoV & 11.3 (7.5) & \textless{}0.001 (0.749) & variation & 0.857 & \textless{}0.001 (0.767) \\ \hline \hline \end{tabular} SD, Standard Deviation; LR, Loading Response; MS, Mid-Stance; TS, Terminal Stance; PS, Pre-Swing; SLS, Single Limb Support; DLS, Double Limb Support; SW, SWing; CoV, Coefficient of Variance; PC, Principal Component; \({}^{*}\) significant correlation with the K-MoCA score.  
\end{table}
Table 3: Participants’ gait function characteristics.  
After performing PCA, two distinct visual components were derived: uncorrected and corrected visual ability. The uncorrected visual ability was found to not correlate with cognition, while higher corrected visual ability was significantly correlated with higher cognitive performance.