Peripapillary retinal nerve fibre layer thickness and macular ganglion cell layer volume in association with motor and cognitive outcomes in 11-year-old children born very preterm.

Abstract

The purpose of the study was to study the association between retinal parameters and motor and cognitive outcomes in children born very preterm. This study is part of a prospective cohort study of very preterm infants (birth weight ≤ 1500 grams/gestational age < 32 weeks). At 11 years of age, the ophthalmological assessment included a retinal optical coherence tomography (OCT) examination of the peripapillary retinal nerve fibre layer (PRNFL) and the macular ganglion cell layer (GCL). The motor performance was assessed with the Movement Assessment Battery for Children-Second Edition (Movement ABC-2), and the cognitive outcome with the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV). A total of 141 children were included. The mean (SD) average PRNFL was 95 μm (10.2μm). The mean (SD) macular GCL volume was 0.34 mm3 (0.03 mm3 ). Higher PRNFL thickness associated with higher percentiles for total scores in the motor assessment (b=0.5, 95% CI 0.1-0.8, p=0.01) and higher macular GCL volume with higher scores in the cognitive assessment (b=1.4, 95% CI 0.5-2.3, p=0.002), also when adjusted for gender, birth weight z-score (birth weight in relation to gestational age) and major brain pathology at term. The associations between higher average PRNFL thickness and better motor performance as well as higher macular GCL volume and better cognitive performance refer to more generalized changes in the brain of 11-year-old children born very preterm. Retinal OCT examinations might provide a deeper insight than mere eyesight in long-term neurodevelopmental follow-up of children born very preterm.