The word "瞎眼" is formed by combining the character "瞎", meaning blind, which is itself composed of the radical "目" (eye) and the component "害" (suggesting harm or damage), with the character "眼", meaning eye, which includes the radical "目" and the phonetic component "艮". In this compound, "瞎" modifies "眼" to describe a damaged or non-functioning eye, resulting in the meaning of blindness or blind eye.