Visual Impairment Due to Lissencephaly

Area of Science:

• Neuroscience
• Ophthalmology
• Genetics

Background:

• Lissencephaly is a rare cortical malformation linked to abnormal neuronal migration.
• It often presents with neurological deficits like intellectual disability and epilepsy.
• Visual pathway disturbances in lissencephaly can lead to significant vision impairment.

Observation:

• A 6-year-old boy presented with poor bilateral vision.
• Initial neurological examination was normal, with no other known medical conditions.
• Magnetic resonance imaging revealed lissencephaly-pachygyria with occipital band heterotopia.

Findings:

• The patient's poor vision was associated with lissencephaly-pachygyria, a rare brain malformation.
• The occipital location of the cortical defect correlated with visual pathway involvement.
• This case underscores the link between cortical malformations and visual deficits.

Implications:

• Cortical malformations, such as lissencephaly, should be considered in the differential diagnosis of pediatric vision loss.
• Ophthalmologists should be aware of potential neurological underpinnings in cases of unexplained visual impairment.
• Advanced neuroimaging is crucial for diagnosing conditions like lissencephaly and understanding their impact on vision.