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Congenital optic nerve hypoplasia
W L Marsh-Tootle1, L J Alexander
1School of Optometry, University of Alabama at Birmingham.
Insights
Congenital optic nerve hypoplasia (CONH) is a growing cause of childhood vision impairment. Early diagnosis and management are crucial for potential amblyopia treatment and identifying associated CNS or endocrine issues.
Area of Science:
- Ophthalmology
- Pediatrics
- Neurology
Background:
- Congenital optic nerve hypoplasia (CONH) is an increasingly recognized cause of pediatric vision impairment.
- Understanding the diverse clinical and ophthalmoscopic presentations of CONH is essential for timely diagnosis.
Observation:
- This study describes the spectrum of CONH presentations through illustrative cases.
- Unilateral CONH can lead to secondary amblyopia, potentially treatable with patching.
- Bilateral CONH often presents early with nystagmus and severe vision loss.
Findings:
- Children with bilateral CONH face a higher risk of central nervous system (CNS) malformations.
- Associated treatable endocrine deficiencies are a significant concern in infants with CONH.
- Functional amblyopia may develop in some children with unilateral CONH.
Implications:
- Early identification of CONH is critical for initiating visual development interventions.
- Screening for CNS abnormalities and endocrine deficiencies is vital in affected children.
- Prompt management can improve visual outcomes and address associated systemic health risks.
Abstract:
Congenital optic nerve hypoplasia (CONH) is an increasingly recognized cause of low vision in children. The spectrum of ophthalmoscopic and clinical presentations of CONH is described here with illustrative cases. Some children with unilateral CONH develop a secondary, functional amblyopia that may respond to patching during visual development. Children with bilateral CONH, poor vision and nystagmus usually present early and have a high risk of exhibiting central nervous system (CNS) malformations and treatable endocrine deficiencies.