I'm not sure what you mean by a brain rush. I'm assuming this was the feeling of you entering sleep/dreaming. What did it feel like exactly? Was it the vibration or electricity waves people refer to?

Did you notice how focusing on your lamp reality check gave importance to this lamp? Giving it your attention made it become the main focus of the dream for a while. I would suggest using a reality check that brings your focus to your body. Maybe something like counting your fingers, trying to push your finger through your hand, or plugging your nose and trying to breathe. This might solve your problem of dreaming through your own eyes. It could help ground your consciousness and focus in your dream body.