Visual function and white matter microstructure in very-low-birth-weight (VLBW) adolescents--a DTI study
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Updated: May 30, 2026
DTI of the Visual Pathway - White Matter Tracts and Cerebral Lesions
Published on: August 26, 2014
Susanne Lindqvist1, Jon Skranes, Live Eikenes
1Department of Laboratory Medicine, Children's and Women's Health, Norwegian University of Science and Technology, N-7489 Trondheim, Norway.
Insights
Premature birth can lead to vision problems. This study found that white matter integrity in the brain, particularly the corpus callosum, is linked to better visual acuity in adolescents born with very low birth weight.
Area of Science:
- Neuroscience
- Ophthalmology
- Developmental Pediatrics
Background:
- Premature birth is a significant risk factor for visual impairments, stemming from both brain and eye conditions.
- Very low birth weight (VLBW) infants face heightened risks of neurological and visual deficits.
- Understanding the link between brain structure and visual function is crucial for early intervention.
Purpose of the Study:
- To investigate the relationship between cerebral white matter microstructure and visual function in adolescents born preterm.
- To compare these relationships between preterm adolescents and term-born controls.
Main Methods:
- Diffusion Tensor Imaging (DTI) was used to assess white matter microstructure, specifically fractional anisotropy (FA).
- Visual function, including visual acuity, was evaluated in 30 preterm adolescents (VLBW) and 45 term-born controls.
- Statistical analysis explored correlations between DTI metrics and visual acuity.
Main Results:
- Visual acuity positively correlated with FA in the corpus callosum and frontal white matter in VLBW participants.
- This correlation was not observed in the control group.
- Findings suggest enhanced importance of callosal visual pathways in preterm-born individuals.
Conclusions:
- Cerebral white matter integrity, particularly in the corpus callosum, is associated with visual acuity in preterm adolescents.
- Callosal visual connections may be more critical for visual development in preterm infants than previously understood.
- These findings highlight potential targets for improving visual outcomes in survivors of prematurity.
Abstract:
Premature birth is associated with visual impairments, due to both cerebral and ocular pathology. This study examined the relationship between cerebral white matter microstructure, evaluated by diffusion tensor imaging (DTI), and visual function, in 30 preterm born adolescents with very low birth weight (VLBW=birth weight⩽1500g) and an age-matched group of 45 term born controls. Visual acuity correlated positively with fractional anisotropy (FA) in corpus callosum and in frontal white matter areas in the VLBW participants, but not in the control participants. Callosal visual connections may play a more important role in the development of good visual acuity than previously acknowledged in preterm born children.
