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Updated: Sep 10, 2025

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Near Visual Acuity Measurements by Community Screeners Using Digital (Peek) Testing Versus Conventional Charts in

Shalinder Sabherwal1,2, Mohd Javed3, Elanor Watts4,5

  • 1Department of Community Ophthalmology and Public Health Research, Dr. Shroff's Charity Eye Hospital, New Delhi, India.

Translational Vision Science & Technology
|August 19, 2025
PubMed
Summary

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This summary is machine-generated.

The Peek near vision test demonstrates high accuracy and reliability for assessing near vision impairment (NVI) and near visual acuity (NVA). This validated digital tool is effective for use by trained community screeners in various settings.

Area of Science:

  • Ophthalmology
  • Public Health
  • Digital Health

Background:

  • Near vision impairment (NVI) and near visual acuity (NVA) are crucial indicators of eye health.
  • Accurate and accessible vision screening tools are essential for early detection and management of visual deficits.
  • The Peek digital near vision test has shown promise in trial settings.

Purpose of the Study:

  • To assess the performance of the Peek digital near vision test in real-world clinic and community settings.
  • To evaluate the interobserver variability of the Peek test among trained screeners.
  • To compare the accuracy and efficiency of the Peek test against conventional chart-based methods for NVI and NVA assessment.

Main Methods:

  • The study involved 768 participants in India.

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  • Stage 1 assessed interobserver variability of Peek NVI screening in 168 clinic participants with three screeners.
  • Stage 2 compared Peek to conventional charts for NVI and NVA using kappa, sensitivity, specificity, and Bland-Altman limits of agreement in 600 participants.

    • Main Results:

    • High interobserver agreement for Peek NVI screening (kappa = 0.92-0.96).
    • Overall agreement between Peek and conventional testing was 95.8% (kappa = 0.91).
    • Peek demonstrated high sensitivity (91.25%) and specificity (99.41%) for NVI; Bland-Altman LoA for NVA were within -0.11 to +0.07 logMAR. Peek testing was faster than conventional charts.

    Conclusions:

    • The validity of the Peek digital near vision test is maintained when used by trained community screeners.
    • The Peek test is a reliable and efficient tool for measuring NVA and NVI.
    • The findings support the use of the Peek test in research, clinical, and community-based eye health programs.