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Updated: Jul 15, 2026

An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System
Published on: March 17, 2023
Maturation of the sensitivity for luminance and contrast modulated patterns during development of normal and
Delphine Thibault1, Odile Brosseau-Lachaine, Jocelyn Faubert
1INSERM, U846, Stem Cell and Brain Research Institute, Department of Integrative Neurosciences, F-69500 Bron, France.
Abstract:
Any object may contain at least two spatio-temporal components referred to as first- and second-order, respectively, defined by spatial-temporal luminance modulation or by contrast, texture or depth modulation. This study investigates form sensitivity of infants, normals, premature or strabismic. A two-alternative forced-choice preferential looking procedure was used in monocular and binocular condition. Maturation profile for both stimuli was similar in the control group. Strabismic infants showed a vertical offset in maturation, which affected the second-order more severely. The pre-term group showed a lag of second-order sensitivity. Our results underline differences between first- and second-order processing.
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