Choroidal Diseases

  • Donghui Li
  • Hanyi Min
  • Weihong Yu


The choroid is a vascularized and pigmented tissue layer lying between the retinal pigment epithelium (RPE)-Bruch membrane complex and the sclera [1]. It extends from the ora serrata anteriorly to the optic nerve posteriorly. The choroid appears in light to dark brown color and sponge-like shape, with thickness of 0.22 mm posteriorly and 0.10–0.15 mm anteriorly. It consists of four layers microscopically, suprachoroidal space, stroma layer, choriocapillaris, and Bruch’s membrane.


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Copyright information

© Springer Nature Singapore Pte Ltd. and People's Medical Publishing House, PR of China 2020

Authors and Affiliations

  • Donghui Li
    • 1
  • Hanyi Min
    • 1
  • Weihong Yu
    • 1
  1. 1.Department of OphthalmologyPeking Union Medical College Hospital and Chinese Academy of Medical ScienceBeijingP.R. China

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