Mythological Experiment

The Greek hero Perseus' bravery has never been in question.  Yet, perhaps if he were more inquisitive he would try an experiment with lights refraction in regards to Medusa's gaze.  You see, if you look Medusa dead in the eye or through a mirror's reflection, one will turn to stone.  I wonder if you were to use a prism to warp her glare, if the play of light would also alter her magic, turning one into something such as tree bark, or Greek Yogurt.