Retinal Microcirculation Defects on OCTA Correlate with Active Inflammation and Vision in Vogt-Koyanagi-Harada Disease.

Purpose: To analyze quantitative OCT-angiography (OCTA) measurements of Vogt-Koyanagi-Harada (VKH) disease at different disease stages.

Methods

OCTA scans of 110 VKH patients in acute uveitic, convalescent and chronic recurrent stage were reviewed; posterior uveitis recurrent cases were excluded. Superficial and deep capillary plexus (SCP and DCP) vascular densities (VD) and subfoveal choroidal thickness (SFCT) were compared.

Results

DCP VD was significantly lower and SFCT higher in VKH than normal controls (NC) in all 3 stages (all p < .001). Anterior uveitis recurrent patients had lower SCP and DCP VDs and thicker SFCT than convalescent patients (p = .001, p < .001, and p = .003, respectively). DCP VD was significantly correlated with visual acuity (p < .05). Patients with history of anterior recurrence had lower retinal VDs in the convalescent stage than those without (p < .001).

Conclusion

Retinal microcirculation is impaired in VKH. DCP VD might be a sensitive indicator of inflammatory status and appeared to be well associated with visual outcome.