That eyeliner, a line drawn from the outer corner of my eye that is aligned with the curve of my waterline, required steady fingers – like a surgeon. Placing the tip of my brush at the end of the line and gently swiping it over my eyelid demonstrated a muscle memory that takes years of practice – like a surgeon. My eyeliner had required me to use as many fine motor control muscles as it takes to deftly hold a scalpel…