So, to break it down:
'a' is the question indicator
-laH is "can"
'egh is "yourself"
bI- is the second person singular without an object.
Can yourself see yourself?, or, Can you see yourself?
Do I understand this?
That's pretty much it. As you say, bI- is just "you", not "yourself", but -'egh would be interpreted as "yourself" here, so I would interpret it only as, "Can you see yourself?"