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PERIPHERAL PIGMENTED STREAKS IN EYES WITH PATHOLOGIC MYOPIA.

Kosei Shinohara1, Muka Moriyama, Noriaki Shimada

  • 1Department of Ophthalmology and Visual Science, Tokyo Medical and Dental University, Tokyo, Japan.

Retina (Philadelphia, Pa.)
|July 27, 2016
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Summary

Peripheral pigmented streaks, resembling octopus tentacles, appear in 44% of pathologic myopia cases. These deep lesions are associated with posterior staphyloma and thinning of the choroid-retina in highly myopic eyes.

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Area of Science:

  • Ophthalmology
  • Retinal Imaging
  • Myopia Research

Background:

  • Pathologic myopia is a leading cause of vision impairment.
  • Peripheral retinal changes are common in high myopia.
  • Understanding these changes is crucial for monitoring disease progression.

Purpose of the Study:

  • To investigate the incidence of peripheral pigmented streaks in pathologic myopia.
  • To characterize the morphology and location of these streaks.
  • To explore their association with posterior staphyloma.

Main Methods:

  • Analysis of widefield fundus images from 375 eyes with pathologic myopia.
  • Detailed examination of peripheral pigmented streak characteristics.
  • Assessment of spatial relationships between streaks and staphyloma edges.

Main Results:

  • Peripheral pigmented streaks were identified in 44% of eyes.
  • Streaks appeared as dark, radially oriented lesions, resembling octopus tentacles.
  • These lesions were more frequent in older patients with posterior staphyloma and located opposite the staphyloma's steep edge.

Conclusions:

  • Peripheral pigmented streaks are a notable finding in 44% of pathologic myopia cases.
  • The streaks likely originate in the large choroidal vessel layer or deeper.
  • Choroid-retinal thinning in high myopia facilitates visualization of these deep structures.