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Updated: May 24, 2026

An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

Published on: March 17, 2023

[Evaluation of grating visual acuity development in normal infants].

Yang Qiu¹, Xiao-qing Li, Xiao-ming Yan

¹Department of Ophthalmology, Peking University First Hospital, Beijing 100034, China.

[Zhonghua Yan Ke Za Zhi] Chinese Journal of Ophthalmology

|February 17, 2012

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Grating visual acuity in Chinese infants significantly improves with age, reaching near-adult levels by 24 months. The Teller Acuity Card (TAC) is a practical tool for assessing infant visual development.

Area of Science:

Ophthalmology and Visual Science
Developmental Pediatrics

Context:

Assessing infant visual acuity is crucial for early detection of visual impairments.
Understanding normal visual development provides benchmarks for clinical evaluation.

Purpose:

To establish age-specific grating visual acuity norms for Chinese infants aged 5 to 24 months.
To evaluate the developmental trajectory of visual acuity in this population.
To assess the utility of the Teller Acuity Card II for infant vision screening.

Summary:

A study involving 244 Chinese infants (5-24 months) utilized the Teller Acuity Card II to measure grating visual acuity.
Binocular and monocular acuities were recorded, showing a progressive increase with age, with acuity approaching adult levels by 24 months.

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Last Updated: May 24, 2026

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The Teller Acuity Card II proved practical and efficient for assessing infant visual acuity, with tests completed in 2-5 minutes.

Impact:

Provides normative data for grating visual acuity in Chinese infants, aiding clinical diagnosis and research.
Demonstrates the feasibility and effectiveness of the Teller Acuity Card II in infant vision assessment.
Highlights distinct phases in visual acuity development, with accelerated progress after 15 months.