No Evidence for Retinal Damage Evolving from Reduced Retinal Blood Flow in Carotid Artery Disease

Figure 1

(a)–(c) Transorbital ultrasound measurement of flow velocities in the central retinal artery (CRA) in a patient with carotid artery occlusion (CAO) and retrograde OA blood flow. (a) Transorbital B-mode scan of the optic nerve and color-mode imaging of the CRA. (b) Flow velocities ipsilateral to the CAO. Besides the reduced absolute flow velocity, there is a markedly delayed systolic flow rise. (c) Flow velocity of the no-CAD side. Note the normal steep systolic flow rise. (d) Exemplary peripapillary OCT ring scan with sectors: temporal (T), superior (S), inferior (I), and nasal (N). (e) Exemplary presentation of an OCT macular volume scan with segmentation of the retinal nerve fiber layer (RNFL) and combined ganglion cell and inner plexiform layer (GCIPL).

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