Christopher K.S. Leung, MD

OCT angiography, or OCT-A, was recently developed to provide three-dimensional noninvasive viewing of the retinal and choroidal vasculature and blood flow estimation at the microcirculation level. OCT-A is based on mapping erythrocyte movement over time by comparing sequential OCT B-scans at a given cross-section. OCT-A has now been explored to study different eye diseases including choroidal neovascularization, polypoidal choroidal vasculopathy, diabetic retinopathy, macular telangiectasia, glaucoma and retinal venous occlusion. This is an exciting era in evaluation of microvasculopathy.

Digital imaging technologies have transformed the diagnostic performance of glaucoma detection and offered new opportunities to decipher the biomechanical and molecular pathways of glaucoma development and progression.

The advent of optical coherence tomography has changed the landscape for detection of structural damage of the optic nerve head and retinal nerve fiber layer in glaucoma assessment.