Figure 2.

A representative EDI-OCT B-scan imaging of a 57 years old subject. The choroid boundary is detected vaguely. An EDI-OCT (Optovue, Inc., California, United States) B-scan image shows the choroid–sclera boundary (arrows) with a central wavelength of 850 nm, which made the zero-delay line to the choroid by moving the device closer to the eye, thus improving image resolution and facilitating the identification of the choroid–scleral interface. EDI OCT, enhanced depth imaging OCT; SD-OCT, spectral domain OCT.