Figure 4.

Media opacity causing artifact. A. A barely visible vitreous condensation had a peculiar shape. To improve visualization of the opacity adaptive histogram equalization was performed. B. There was shadowing of the B-scan OCT image evident. C. A defect in the angiographic image was seen that corresponded to the vitreous condensation. Note in the darkest portions of the artifact, no flow is evident from the retinal vessels because of the loss of signal caused by the vitreous opacity. By analogy loss of signal caused by the pigment in the retinal pigment epithelium decreases visualization of blood flow in the choroid.