O familiar eye, what have you done by looking at me like a stranger?

Imagine locking eyes with someone who once knew the deepest corners of your heart, only to realize they are looking right through you like an absolute stranger. The poet captures this quiet, devastating shock by contrasting the 'familiar eye' (chashm-e-aashna) with an aloof, foreign glance. It is a tender reflection on how utter indifference from someone you love can hurt infinitely more than outright hostility.