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Achiasmia and unilateral optic nerve hypoplasia in an otherwise healthy infant

Howard D Pomeranz1, Anthony K Agadzi, Björn Ekesten

  • 1Department of Ophthalmology, University of Minnesota Medical School, Minneapolis, Minnesota, USA.

Acta Ophthalmologica Scandinavica
|February 1, 2006
PubMed

Insights

This study reports a rare case of isolated non-decussating retinal-fugal fibre syndrome and optic nerve hypoplasia in an infant. Diagnosis was confirmed through ophthalmological evaluation and MRI, highlighting visual pathway abnormalities.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Imaging

Background:

  • Optic nerve hypoplasia (ONH) is a congenital condition affecting vision.
  • Non-decussating retinal-fugal fibre syndrome (NDRFFS) is a rare anomaly of the visual pathway.

Observation:

  • An 18-month-old boy presented with poor visual attentiveness and nystagmus from early infancy.
  • Clinical examination revealed decreased visual acuity, nystagmus, and esotropia.

Findings:

  • Visual evoked potentials (VEP) showed occipital asymmetry suggestive of crossed asymmetry and right optic nerve hypoplasia.
  • Magnetic resonance imaging (MRI) and fundoscopy supported achiasmia and probable optic nerve hypoplasia.
  • Ophthalmological and MRI findings confirmed isolated NDRFFS and optic nerve hypoplasia.

Implications:

  • This case underscores the importance of comprehensive ophthalmological and neuroimaging evaluations for diagnosing rare visual pathway disorders.
  • Early diagnosis of NDRFFS and ONH is crucial for appropriate management and visual rehabilitation.
  • Understanding these conditions aids in differentiating them from other causes of infantile nystagmus and visual impairment.

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