The effect of simulated reduced visual acuity on mobility control / Dzul Hisham Mhd Razali

Purpose: This study investigated the effect of simulated reduced visual acuity level on 3 parameters of mobility control performance. Method: The mobility control (MC) performance was measured for 22 young visually normal participants (mean age 23 years; range 21-24 years; 10 men and 12 women) under four visual acuity levels which were logMAR 0.0, logMAR 0.2, logMAR 0.3 and logMAR 0.5. Binocular plus lenses was used to simulate reduced visual acuity level in which incorporated in trial frame. MC performance measures included time to brake react (MC1), reaction of steering (MC2) and XY position (MC3) performance. Result: One-way repeated ANOVA reported that the simulated reduced visual acuity was not significantly impaired on MC1, MC2 and MC3 performance by using mobility control (p > 0.05). The result was showing p value more than 0.05 in which MC1 (p = 0.359), speed limit towards MC1 (p = 0.814), distance travelled towards MC1 (p = 0.361), MC2 (p = 0.016), MC3 (p = 0.104), and the speed limit towards MC2 and MC3 (p = 0.901). Conclusion: MC1, MC2, MC3 performance under reduced visual acuity was not significantly affected on mobility control. There was no significant interaction between reduced visual acuity and mobility control performance from this study and previous study.