Spectral Domain Optical Coherence Tomography in Macular Diseases by Carsten H. Meyer Sandeep Saxena & SriniVas R Sadda

Author:Carsten H. Meyer, Sandeep Saxena & SriniVas R Sadda
Language: eng
Format: epub
Publisher: Springer India, New Delhi

16.2 Typical Polypoidal Choroidal Vasculopathy

With OCT, polypoidal structure is observed as a steep, dome-shaped protrusion of RPE. Moderate reflection at some parts inside of this RPE protrusion is considered as polyp blood vessels themselves (Iijima et al. 1999, 2000; Otsuji et al. 2000). Areas of branch vascular network vessels are observed as two hyperreflective lines (double-layer sign) (Khan et al. 2012; Ojima et al. 2009; Sato et al. 2007; Tsujikawa et al. 2007). These lines are RPE and the Bruch membrane, and the network vessels are thought to be located between those two layers.

There are some cases of PCV associated with serous pigment epithelium detachment (PED). Polypoidal structure is sometimes located in a marginal edge of the PED (notch sign), and it is also observed as a dome-shaped protrusion of RPE besides the edge of PED on OCT.

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