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Superior segmental optic nerve hypoplasia in youth.

Mineo Takagi1, Haruki Abe2, Tetsuhisa Hatase2

  • 1Division of Ophthalmology and Visual Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan. mtakagi@med.niigata-u.ac.jp.

Japanese Journal of Ophthalmology
|December 18, 2008
PubMed
Summary

Superior segmental optic nerve hypoplasia (SSOH) in youth is characterized by specific visual field defects (VFDs) and nerve fiber layer defects (NFLDs). Optic disc appearance is variable and not a primary diagnostic factor for SSOH.

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Area of Science:

  • Ophthalmology
  • Neuro-ophthalmology
  • Pediatric Ophthalmology

Background:

  • Superior segmental optic nerve hypoplasia (SSOH) is a rare congenital anomaly affecting optic nerve development.
  • Understanding its clinical presentation in youth is crucial for accurate diagnosis and management.

Purpose of the Study:

  • To investigate the clinical characteristics of SSOH in young patients.
  • To establish diagnostic criteria for SSOH in pediatric populations.

Main Methods:

  • Evaluation of eleven eyes from seven young patients with SSOH.
  • Utilized Goldmann and Humphrey perimetry to assess visual field defects (VFDs).
  • Analyzed optic disc morphology and nerve fiber layer defects (NFLDs); prospectively followed patients.

Main Results:

  • Identified characteristic wedge-shaped VFDs, oriented to the blind spot, sometimes discontinuous.
  • Observed NFLDs consistent with VFDs.
  • Found variable optic disc morphology (double ring, small discs, topless disc); no gestational diabetes history; VFDs remained stable over follow-up.

Conclusions:

  • Characteristic VFD patterns and corresponding NFLDs are key diagnostic indicators for SSOH.
  • Optic disc morphology is not a reliable diagnostic feature for SSOH in youth.