Left and right are defined from “1st person’s perspective”, but that’s not how medics typically look at their patients. When a doctor looks a patient in the eye, the left is on the right, and the right is on the left.

That’s why many medical illustrations have the left on the right and vice versa (examples: https://en.wikipedia.org/wiki/Anatomical_terminology#/media/..., https://en.wikipedia.org/wiki/Palmer_notation)