A user-centered Mobile application for contact Lens wearers: Impact on knowledge and practice

To evaluate the mobile application's effectiveness in enhancing contact lens (CL) wearers' knowledge and improving their lens care practice.

This pretest-posttest study involved neophyte CL wearers in Tehran, Iran, who were randomly assigned to intervention and control groups, matched by sex and lens type. Participants' demographics, knowledge, and practice were assessed using validated questionnaires. The intervention group used a user-centered mobile application ("My Lens") with educational content, interactive features, and reminders for two months. Data were analyzed using chi-square, independent sample t-test, and paired t-test.

Sixty neophyte CL wearers participated, with no significant differences in demographic or lens-use characteristics between groups. In the intervention group, mean knowledge scores increased from (27.7 ± 5.8) at pre-test to (43.5 ± 1.4) at post-test, indicating a statistically significant improvement with a very large effect size (d = 3.77). In the control group, scores also increased from (27.7 ± 2.7) to (33.6 ± 2.5), with a smaller but significant effect (d = 2.28). Post-intervention practice scores were higher in the intervention group (93.6 ± 3.0) compared to the control group (77.8 ± 3.6), with a very large effect size (d = 4.19). Overall, the mobile application effectively improved both knowledge and practice compared to routine training.

The user-centered mobile application significantly improved both knowledge and practice among CL wearers, confirming the effectiveness of mobile-based educational (m-health) tools. Providing structured, accessible, and user-friendly education, such applications may prevent complications and promote safer CL use.