[bots]

Your eye sight isnt like a simple switch where it works or it doesnt. In order to focus properly we use the muscles in our eyes which is why as peoples sight gets worse. they tend to squint etc because they are using those eye muscles more.

If i was a betting man, its because you haven't warmed up your eye muscles for the day after a sleep. So it's probably the first sign that they are deteriorating. Best thing is to go and get an eye test, its dirt cheap.