The development of the temporal and nasal visual fields during infancy

Area of Science:

• Ophthalmology
• Developmental Neuroscience
• Pediatric Vision

Background:

• The development of the visual system is crucial for infant cognitive and motor skills.
• Understanding the timeline of visual field expansion in infants provides insights into neurodevelopmental trajectories.

Purpose of the Study:

• To quantitatively measure the developmental progression of the monocular visual field in infants.
• To compare visual field development in the temporal and nasal visual fields during early infancy.

Main Methods:

• Static perimetry was employed to assess visual field extent in infants (0-6 months) and adults.
• Flashing lights of 3 and 6 degrees were presented at varying eccentricities (15-120 degrees) in temporal and nasal visual fields.
• Visual detection was inferred from eye movements towards stimuli compared to control trials.

Main Results:

• The visual field demonstrated age-dependent expansion from central to peripheral vision for both 3 and 6-degree stimuli.
• Development of the nasal visual field showed a delay compared to the temporal visual field in infants.
• Adults exhibited a fully developed visual field, serving as a benchmark for infant development.

Conclusions:

• Infant visual field development is a gradual process characterized by outward expansion.
• Asymmetries in visual field development, with nasal lagging behind temporal, are evident in early infancy.
• These findings contribute to understanding typical visual development and potential indicators for visual pathway maturation.