Robbiani dermal-optic test

The Robbiani dermal-optic test was a medical diagnostic test that revealed a subject's basic emotional structure by analyzing skin and pupil response to visual stimulation at specific color wavelengths. Captain James T. Kirk was given a Robbiani derma-optic test upon taking command of the USS Enterprise (NCC-1701).

In 2269, Doctor Leonard McCoy subjected Kirk to the test to compare with his previous results, when Kirk's emotional state seemed to be under duress.