As COVID-19 evolves from an acute infection to a chronic clinical concern, emerging evidence suggests that the virus may be silently reshaping microvascular health long after respiratory symptoms resolve. Recent findings indicate that even patients with mild disease can develop microvascular alterations, particularly in the retina, pointing toward a systemic vascular insult that conventional clinical evaluations may fail to detect. This raises a critical question: Is fatigue, brain fog, or visual strain in post-COVID patients merely symptomatic, or does it reflect deeper microcirculatory compromise?
What makes this especially relevant today is the discovery of measurable changes in the foveal avascular zone (FAZ) using optical coherence tomography angiography (OCTA). Research shows that recovered COVID-19 patients, especially those reporting long COVID fatigue, exhibit significant FAZ…
