Japanese Journal of Ophthalmology
Volume 48, Number 6, 578-583, DOI: 10.1007/s10384-004-0120-9

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CLINICAL INVESTIGATION

Superior Segmental Optic Hypoplasia Found in Tajimi Eye Health Care Project Participants

Tetsuya Yamamoto, Miho Sato and Aiko Iwase

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Abstract

Purpose  

To investigate the prevalence and characteristics of superior segmental optic hypoplasia in Japanese.

Methods  

We studied 14thinsp779 subjects, aged 40 years or older, who underwent IMAGEnet fundus photography as part of a large-scale eye disease screening project conducted in Tajimi, Japan. A single researcher reviewed all of the photographs for the presence of ocular abnormality in the optic nerve head and retina, paying special attention to the presence of superior segmental optic hypoplasia.

Results  

Fundus photographs of 14thinsp431 cases (28thinsp396 eyes) were successfully reviewed. We found superior segmental optic hypoplasia in 37 cases (54 eyes; 0.3% of the cases and 0.2% of the eyes). Of the 37 cases, 23 (62%) showed the corresponding visual field defect in at least one eye.

Conclusion  

The prevalence of superior segmental optic hypoplasia is about 0.3% in the Japanese population. Jpn J Ophthalmol 2004;48:578–583 © Japanese Ophthalmological Society 2004

Key words  glaucomatous optic neuropathy - optic disc anomaly - prevalence - superior segmental optic hypoplasia

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