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Development of vision in infant primates.

D Y Teller, R Boothe

    Transactions of the Ophthalmological Societies of the United Kingdom
    |January 1, 1979
    PubMed
    Summary
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    Infant monkeys and humans show similar visual development patterns. Monkey infants develop visual acuity four times faster, establishing monkeys as a model for human visual development research.

    Area of Science:

    • Developmental neuroscience
    • Comparative psychology
    • Ophthalmology

    Background:

    • Understanding human visual development is crucial for early intervention.
    • Macaque monkeys offer a potential model for studying visual development due to physiological similarities.

    Purpose of the Study:

    • To systematically research spatial vision development in human and macaque infants.
    • To compare visual development trajectories between human and macaque infants.
    • To establish the macaque monkey as a viable model for human visual development.

    Main Methods:

    • Utilizing a forced-choice preferential looking technique to track acuity development in both species.
    • Employing operant conditioning to assess contrast-sensitivity functions (CSFs) in infant macaques.

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  • Inducing and studying strabismic and meridional amblyopias in infant monkeys.

    • Main Results:

    • Acuity development demonstrates similar patterns in human and macaque infants.
    • Infant macaques exhibit a visual acuity development rate approximately four times faster than human infants.
    • Significant changes in the contrast-sensitivity function (CSF) shape were observed in macaque infants for at least 20 postnatal weeks.
    • The time course of strabismic amblyopia development was successfully characterized in infant monkeys.

    Conclusions:

    • Comparative behavioral studies in human and macaque infants are essential for validating the macaque model.
    • The macaque monkey serves as a valuable model for understanding human infant visual development.
    • Findings provide insights into the developmental timelines and potential interventions for visual impairments.