Swept‐source optical coherence tomography angiography in toxoplasmic retinochoroiditis

Abstract

AbstractPurpose: To describe optical coherence tomography angiography (OCTA) findings in eyes with active and scarred toxoplasmic retinochoroiditis.Methods: OCTA scans in active (25 eyes) and scarred (17 eyes) retinochoroiditis were retrospectively reviewed at Fattouma Bourguiba University Hospital, Monastir, Tunisia.Results: In active lesions, OCTA findings included a non‐detectable flow signal area in retinal vascular plexuses and choriocapillaris in all 25 eyes (100%), an abnormal intraretinal vascular process in two eyes (8%), and an associated area of retinal flow deficit secondary to branch retinal artery occlusion in one eye (4%). In scarred lesions, OCTA findings included a flow deficit area in retinal vascular plexuses and choriocapillaris in all 17 eyes (100%), a visibility of larger deeper choroidal vessels at the level of choriocapillaris in nine eyes (53%), and a well‐defined intraretinal vascular network in one eye (5.9%). Peripapillary scars were associated on OCTA with wedge‐shaped loss of radial peripapillary capillaries with corresponding localized retinal nerve fibre layer defect and visual field loss.Conclusions: OCTA allows to non‐invasively detect retinal and choroidal vascular changes in active and scarred toxoplasmic retinochoroiditis.