○Basics

Visual symptoms in POTS and dysautonomia are usually orthostatic: your eyes briefly getting less blood when you are upright. Because the eye sits above the heart and the retina burns oxygen faster than almost any tissue, vision often fades before you actually feel faint, showing up as blurring, graying, or tunneling that clears when you sit or lie down. Light sensitivity and dry eyes are also common. Track visual symptoms beside a stand test so you can read the pattern, and get sudden, one-eyed, or persistent vision changes checked by a clinician.