Diagnostic Accuracy of the Peek Acuity Smartphone App Versus Conventional Snellen Charts in Young Adults: A Cross-Sectional Study
JOTHI, S., E, S., S, R., N, M., A. Solomon, A., N, P., Ebenezer, D., Kumar, A., D, P., p, V. (2025). Diagnostic Accuracy of the Peek Acuity Smartphone App Versus Conventional Snellen Charts in Young Adults: A Cross-Sectional Study. EKB Journal Management System, 42(10), 27-35. doi: 10.21608/bmfj.2025.397098.2489
SUDESAN JOTHI; Sowmya E; Rajalaksmi S; Muralitharan N; Annie A. Solomon; ponmozhi N; Devlin Ebenezer; Ajith Kumar; Priyadharshini D; vidyashree p. "Diagnostic Accuracy of the Peek Acuity Smartphone App Versus Conventional Snellen Charts in Young Adults: A Cross-Sectional Study". EKB Journal Management System, 42, 10, 2025, 27-35. doi: 10.21608/bmfj.2025.397098.2489
JOTHI, S., E, S., S, R., N, M., A. Solomon, A., N, P., Ebenezer, D., Kumar, A., D, P., p, V. (2025). 'Diagnostic Accuracy of the Peek Acuity Smartphone App Versus Conventional Snellen Charts in Young Adults: A Cross-Sectional Study', EKB Journal Management System, 42(10), pp. 27-35. doi: 10.21608/bmfj.2025.397098.2489
JOTHI, S., E, S., S, R., N, M., A. Solomon, A., N, P., Ebenezer, D., Kumar, A., D, P., p, V. Diagnostic Accuracy of the Peek Acuity Smartphone App Versus Conventional Snellen Charts in Young Adults: A Cross-Sectional Study. EKB Journal Management System, 2025; 42(10): 27-35. doi: 10.21608/bmfj.2025.397098.2489

Diagnostic Accuracy of the Peek Acuity Smartphone App Versus Conventional Snellen Charts in Young Adults: A Cross-Sectional Study

Benha Medical Journal
Volume 42, Issue 10, October 2025, Pages 27-35    PDF (791.57 K)
Document Type: Original Article
DOI: 10.21608/bmfj.2025.397098.2489
Authors
SUDESAN JOTHI* 1; Sowmya E2; Rajalaksmi S3; Muralitharan N4; Annie A. Solomon3; ponmozhi N4; Devlin Ebenezer5; Ajith Kumar6; Priyadharshini D7; vidyashree p8
11. Assistant Professor, DR. M.G.R. Educational and Research Institute, ACS Medical College, Faculty of Allied Health Sciences, Chennai, Tamil Nadu,India
2Department of Optometry, Faculty of Allied Health Sciences, DR. M.G.R. Educational and Research Institute, ACS Medical College, Chennai,
3Lecturer and Research Scholar, Faculty of Allied Health Sciences, Dr. M.G.R. Educational and Research Institute, Chennai, Tamil Nadu, India
4Lecturer, Faculty of Allied Health Sciences, Dr. M.G.R. Educational and Research Institute, Chennai, Tamil Nadu, India
53. Department of Optometry, Faculty of Allied Health Sciences, DR. M.G.R. Educational and Research Institute, ACS Medical College, Chennai, Tamil Nadu. Mail: ajithoptom@gmail.com
63. Department of Optometry, Faculty of Allied Health Sciences, DR. M.G.R. Educational and Research Institute, ACS Medical College, Chennai, Tamil Nadu.
74. Department of Optometry, Faculty of Allied Health Sciences, DR. M.G.R. Educational and Research Institute, ACS Medical College, Chennai, Tamil Nadu,India
86. Department of Optometry, Faculty of Allied Health Sciences, DR M.G.R. Educational and Research Institute, ACS Medical College, Chennai, Tamil Nadu.
Abstract
Background:

Mobile health technologies offer promising solutions to vision screening gaps, especially in resource-limited environments. This study evaluates the diagnostic accuracy of the Peek Acuity smartphone application in comparison with the conventional Snellen chart for assessing visual acuity (VA) among young adults.



Methods:

A cross-sectional study was conducted with 100 undergraduate students aged 18–23 years at a tertiary academic institution. Monocular VA was assessed using both the Snellen chart and the Peek Acuity app. Sex and age distributions were analyzed using Chi-square goodness-of-fit tests. Pearson correlation coefficients were used to determine the relationship between Snellen and Peek VA scores for each eye.



Results:

This study included 100 participants, 69% were female (95% CI: 58.8%–77.7%) and 31% male (95% CI: 22.3%–41.2%), with a significant sex distribution difference (p < 0.001). The mean age was 21.0 ± 0.33 years, with 92% of students aged 21. Age distribution was significantly skewed (χ² = 239.6, df = 3, p < 0.001). Peek and Snellen VA scores matched in 65% of right eyes and 69% of left eyes. A strong correlation was found between Snellen and Peek results in the right eye (r = 0.79, p < 0.001) and an even stronger correlation in the left eye (r = 0.85, p < 0.001), indicating close agreement between the tools.



Conclusion:



Peek Acuity demonstrates strong concordance with the Snellen chart and serves as a reliable, accessible, and low-cost alternative for VA screening in young adult populations.
Keywords
Keywords: Peek Acuity; Visual Acuity; Smartphone Application; Mobile Health (mHealth); Teleophthalmology
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