Re: Spaide et al.: Volume-rendering optical coherence tomography angiography of macular telangiectasia type 2 (Ophthalmology 2015;122:2261-9)

We agree very much with Spaide et al1 that a great advantage of optical coherence tomography (OCT) angiography is its 3-dimensional (3D) nature, and that color coding for the depth of vessels is a natural way to represent this 3D information. However, we think it is disingenuous for Dr Spaide to imply that he was the first to adapt this approach from CT and MR literature and apply it to OCT angiography. He wrote:Instead of imaging the average or densest voxel, volume rendering uses all the voxel values to make an image that retains the sense of depth and is less prone to image artifact.