Related Experiment Video
Updated: Dec 7, 2025
Mouse Models of Periventricular Leukomalacia
Published on: May 18, 2010
Structural brain damage and visual disorders in children with cerebral palsy due to periventricular leukomalacia
Francesca Tinelli1, Andrea Guzzetta2, Giulia Purpura1
1Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Viale del Tirreno 331, Calambrone, Pisa, Italy.
Insights
Brain lesion severity in children with periventricular leukomalacia (PVL) significantly impacts visual function. Magnetic Resonance Imaging (MRI) helps correlate brain damage with specific visual deficits in cerebral palsy (CP).
Area of Science:
- Neuroscience
- Ophthalmology
- Pediatrics
Background:
- Periventricular leukomalacia (PVL) is a common cause of cerebral palsy (CP) in children.
- Visual impairments are frequent in children with CP, but the precise relationship with PVL lesion characteristics is not fully understood.
Purpose of the Study:
- To investigate the correlation between the type and severity of brain lesions on Magnetic Resonance Imaging (MRI) and visual function in children with PVL.
- To establish how specific patterns of brain damage relate to particular visual deficits.
Main Methods:
- A cohort of 72 children with bilateral CP and a history of PVL underwent MRI and comprehensive visual function assessments.
- Brain lesion severity and location were evaluated using a semi-quantitative MRI scale tailored for children with CP.
Main Results:
- A strong correlation was found between overall brain lesion severity (global, hemispheric, and subcortical scores) and the total visual function score.
- Cortical damage was associated with deficits in visual acuity, visual field, stereopsis, and color perception.
- Subcortical brain damage specifically impacted ocular motility, including fixation and saccades.
Conclusions:
- Structural MRI is a valuable tool for assessing the relationship between brain lesion severity and visual function in children with CP.
- Understanding these relationships can aid in predicting visual outcomes and guiding interventions for affected children.
Aim:
To systematically explore the relationship between type and severity of brain lesion on Magnetic Resonance Imaging (MRI) and visual function in a large cohort of children with periventricular leukomalacia (PVL).
Methods:
94 children with bilateral cerebral palsy (CP) and history of PVL were recruited at Stella Maris Scientific Institute in Pisa (Italy). We included data of participants (72) with at least one MRI after the age of three years and an evaluation of visual function including fixation, following, saccades, nystagmus, acuity, visual field, stereopsis and color perception. Brain lesions location and extent were assessed by a semi-quantitative MRI-scale for children with CP.
Results:
Brain lesion severity strongly correlated with visual function total score (global MRI score p = .000; hemispheric score p = .001 and subcortical score p = .000). Moreover, visual acuity, visual field, stereopsis and colour were compromised when a cortical damage was present, while ocular motricity (and in particular fixation and saccades) were compromised in presence of subcortical brain damage.
Interpretation:
Structural MRI is valuable for understanding the relationship between brain lesion severity and visual function in children with CP.
