Representative case images of a 66-year-old female patient with left sixth nerve palsy.

Optical coherence tomography angiography (OCTA) color-coded scans illustrating the acquisition of various parameters. At the diagnostic point, results of the Hess screen test revealed -2 grade of gaze limitation at lateral gaze of the left eye paralysis eye (A). Vessel densities of radial peripapillary capillary (RPC), superficial capillary plexus (SCP), and deep capillary plexus (DCP) were compared between the paralysis eye (B) and contralateral nonparalysis eye (C). After 3 months, her symptoms of limited eye movement (D) and diplopia had improved. At the recovery phase, vessel densities of RPC, SCP, and DCP in both eyes (E, F) were repeatedly compared.