The word 眼光 is formed through a vivid conceptual metaphor. It combines 眼 (eye, representing sight or observation) with 光 (light, representing illumination, clarity, or a beam). Together, they create the idea of "the light from the eye", which figuratively transforms into one's "way of seeing", not just literal vision, but the perceptive ability to judge, appreciate, or discern something with clarity and insight. It is the metaphorical beam of perception that one projects onto the world.