Oculomotor Control in Preterm Infants: Insights from Eye-Tracking Technology

Area of Science:

• Neuroscience
• Developmental Pediatrics
• Ophthalmology

Background:

• Visual function is a sensitive indicator of early neural development.
• Preterm birth can affect early cerebral processes, including visual development.
• Eye-tracking technology offers quantitative measures of oculomotor behavior.

Purpose of the Study:

• To investigate oculomotor behavior development in preterm children using eye-tracking.
• To identify distinct oculomotor control patterns in preterm and full-term children.
• To correlate oculomotor deficits with prematurity severity and associated complications.

Main Methods:

• Cross-sectional study of 428 children (0.5-14 years), including 214 preterm and 214 matched controls.
• Oculomotor behavior analysis using the DIVE device (eye-tracking) measuring fixation duration, saccadic performance, and fixation stability (BCEA).
• Cluster analysis to identify oculomotor control (OMC) patterns.

Main Results:

• Preterm children showed significantly poorer fixation stability (higher BCEA) and shorter fixation durations than controls.
• Early preterm infants exhibited the most unstable fixations.
• Three OMC patterns identified: 'good,' 'impulsive,' and 'poor,' with 'poor' linked to extreme prematurity, low birth weight, and IVH.

Conclusions:

• Preterm birth is associated with significant oculomotor deficits, particularly affecting fixation and saccadic abilities.
• Early preterm infants demonstrate the most pronounced oculomotor impairments.
• Targeted interventions are needed for preterm children, especially those with poor oculomotor control.