The excess and extremity of my waiting has become a cause of dismissal/disgrace for my 'heat'; and that eye of mine that has remained open in waiting has become the chain on the outside of the door, because of which now 'heat' cannot at all enter. The use of a door-chain as a simile for an opened eye is extraordinarily harmonious and appropriate. == Asi, p. 103

That is, through the lessening of the 'heat' of the heart, waiting increased-- to the point that the opened eye became the 'circle outside the door' (the eyes became rooted to the door). It's obvious that in a state of waiting-- which is a state of anxiety and uncertainty, it's as if there's no peace, and restlessness remains. == Zamin, p. 149

= for restlessness to end. = the chain outside the door. All night I kept waiting for the beloved. When after much waiting she did not come, then I became sure that now she would not come. In despair, I kept standing open-eyed outside the door. In this way my open eye became a chain on the door and remained that way. The circle of the eye has a similitude with the circle of a chain. The verse has another meaning as well. In waiting, the eye that remained open proved that now no one would come, the way if a door would be closed and the chain fastened, the meaning would be that now no outsider would enter. The open eye too is synonymous with the fastening of the chain on a door. Restlessness has been thrown out of the house. Now the door has been closed against it. The above commentary is that of Asi. In it there's a small objection: that after throwing someone out, a chain is fastened inside the house. The meaning of fastening a chain outside is that one has oneself to go outside. Thus the open eye is a symbol of waiting, not of closing the door on restlessness. == Gyan Chand, p. 181