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Related Experiment Video

Updated: Apr 6, 2026

Optical Coherence Tomography: Imaging Mouse Retinal Ganglion Cells In Vivo

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Published on: September 22, 2017

Congenital optic tract hypoplasia.

Yoshikazu Hatsukawa¹, Takahiro Fujio¹, Masanori Nishikawa²

¹Department of Ophthalmology, Osaka MedicalCenter and Research Institute for Maternal and Child Health.

Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus

|August 1, 2015

Summary

This study details a rare case of isolated unilateral optic tract hypoplasia. Findings included visual field deficits and imaging confirmation of optic nerve and tract underdevelopment.

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Area of Science:

Ophthalmology
Neurology
Medical Imaging

Background:

Optic tract hypoplasia is an exceptionally rare congenital condition affecting visual pathway development.
Previous literature documents only two reported cases of isolated unilateral optic tract hypoplasia.

Observation:

The patient presented with bilateral optic disc hypoplasia observed during ophthalmoscopic examination.
Visual field studies revealed an incongruous right homonymous hemianopia, indicating a specific pattern of vision loss.

Findings:

Magnetic resonance imaging (MRI) confirmed bilateral hypoplasia of the optic nerves and specifically the left optic tract.
Spectral domain optical coherence tomography (SD-OCT) mapping results demonstrated a strong correlation with the observed visual field deficits.

Implications:

This case expands the understanding of optic tract hypoplasia, highlighting its potential for varied presentations.
Advanced imaging techniques like MRI and SD-OCT are crucial for accurate diagnosis and characterization of such rare visual pathway anomalies.
Further research into the etiology and long-term visual outcomes of optic tract hypoplasia is warranted.