Evaluation of Melanin Changes in Acute Vogt–Koyanagi–Harada Disease Using Polarization-Sensitive Optical Coherence Tomography

PS-OCT revealed that choroidal melanin density decreased during the acute phase of VKH disease and significantly increased after treatment. PS-OCT provides a noninvasive method for observing melanin dynamics in VKH disease and aids in differentiating it from posterior scleritis. PS-OCT could offer valuable insights into the pathology of VKH disease and its potential implications for management.