The operating microscope transformed the world into a landscape measured in millimeters.

Under its magnified lens, the severed peripheral nerve no longer looked like a simple strand of pale tissue. It resembled an intricate constellation—countless fascicles waiting to be reunited with impossible precision. A single tremor of the hand could cost a patient sensation forever. A single perfectly placed suture could mean the difference between holding their child's hand again or never sensing it or moving it.