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Updated: Sep 29, 2026
Mouse Models of Periventricular Leukomalacia
Published on: May 18, 2010
Visual and perceptual characteristics, ocular motility and strabismus in children with periventricular leukomalacia
L Jacobson1, J Ygge, O Flodmark
1Tomteboda Resource Centre, Solna, Sweden.
Insights
Periventricular leukomalacia (PVL) is a brain lesion that causes visual impairment in children. Early diagnosis via MRI and tailored educational strategies are crucial for managing children with PVL.
Area of Science:
- Neuroscience
- Ophthalmology
- Pediatrics
Background:
- The immature visual system is susceptible to hypoxic-ischemic injury.
- Periventricular leukomalacia (PVL) is a significant cause of pediatric visual impairment, affecting visual pathways.
- PVL results from hypoxia-ischemia between 24-34 weeks of gestation.
Purpose of the Study:
- To describe the characteristics and clinical spectrum of cerebral visual dysfunction caused by PVL.
- To highlight the role of MRI in diagnosing PVL and associated ophthalmologic findings.
- To emphasize the need for individualized educational and habilitational strategies for affected children.
Main Methods:
- Review of clinical presentations and diagnostic findings in children with PVL.
- Correlation of neuroimaging (MRI) with ophthalmologic examinations.
- Analysis of the spectrum of visual and neurological deficits.
Main Results:
- PVL causes delayed visual maturation, reduced visual acuity, visual field defects, and perceptual-cognitive issues.
- MRI is key for diagnosing PVL, which is linked to optic disk abnormalities, strabismus, nystagmus, and poor visually guided eye movements.
- Clinical presentation ranges from severe visual impairment with cerebral palsy to isolated esotropia with normal intellect.
Conclusions:
- PVL presents a wide spectrum of visual and neurological impairments in children.
- Comprehensive assessment including MRI and ophthalmologic evaluation is essential for diagnosis and management.
- Developing optimal educational and habilitational plans is critical for improving outcomes in children with PVL.
Abstract:
The immature visual system is vulnerable to adverse events. Periventricular leukomalacia (PVL), an end-stage lesion after hypoxia-ischemia at gestational age 24-34 weeks affecting the visual radiation, has become a principal cause of visual impairment in children. Cerebral visual dysfunction caused by PVL is characterized by delayed visual maturation, subnormal visual acuity, crowding, visual field defects, and visual perceptual-cognitive problems. Magnetic resonance imaging is the method of choice for diagnosing this brain lesion, which is associated with optic disk abnormalities, strabismus, nystagmus, and deficient visually guided eye movements. Children with PVL may present to the ophthalmologist within a clinical spectrum from severe visual impairment in combination with cerebral palsy to only early-onset esotropia, normal intellectual level and no cerebral palsy. Optimal educational and habilitational strategies need to be developed to meet the needs for this group of children.
