Why are you trying to AP with your eyes open? No, it wasn't AP, you were falling asleep. Next time try closing your eyes and do it during the afternoon when you're wide awake.
Although it is possible to AP with your eyes open it is not for the beginner...nor truly desired. If this occurs, the person generally stares off unblinking and unaware of their physical vision (as people do when sleeping with their eyes open) or their eyes naturally close. But its best to close your eyes because if you do go into a deep trance with your eyes open, they're usually very sore, dry and possibly even red/bloodshot once you come back. Not exactly pleasant...