Correct. Retinal artery occlusion causes infarction of the retina and sudden vision loss. The whitening of the retina, such as you see here, is due to ischemic retinal swelling. The surrounding normal retina is transparent, so it allows reflection of the orange color of the underlying choroidal vessels. Ischemic swelling destroys retinal transparency in the infarcted region. The red spot in the center of the white patch is called a “cherry-red spot.” It appears red because the foveal retina is nourished by the choroidal arteries, which are not occluded.