I think I was slightly autistic as a child, I too have always had no eye contact with anyone, barring the very rare occasion, a few times it has been very very overwhelming. Memory fades exactly as to how, though those instances remain in my head as points of interest in time, with no clear full view.
I cannot speak for everyone, I happen to know there are great differences at the very base of autistic people, some have phenomenal memories, sometimes explanations are varying, even outside the structures currently recognised as fact based.
How it is for me though, is that I grew up, entirely relying on my own choices as to who I would speak to and who I would walk away from at the very earliest oppertunity and not return to, delibrately. Of course when out and about, at home I was properly watched etc.
Who I would walk away from was just generally, everyone.... I never really had any desire to connect or to be part of anything.
Moments are moments and people come and go.
Only in strange adventures was connection possible, that can amount to as little as two people doing BMX jumps.. Then connection is hobby. Computer systems are good, if graphics are astounding, games which two people play on together. Though only the extreme holds interest.... For example gladiatorial sword fighting of wonderful graphical accuracy. If it is not real, we leave it and eye contact with adversary is never gained.. To alleviate mild autism, to reintegrate, to any kind of worthwhile end which lasts, friendships must be formed with exacting high standards, or interest in life falls flat again.
The atari 2600 probably didn't 'fix' autism as much as it could have today.. in those terms.
It gets old and crusty.... Eye contact, if you do not keep them interested. It sure as hell stays that way too. Then give the teenager a martial arts book and a punchbag, at least he will bounce up when there's something needs doing.
Discipline as a foreword .. of course.
Well put, I am here chewing a crust out of life.
The really bizarre thing about all this, is I can be classed as retarded, right, wrong, clever, nice, evil and a national security risk all at the same time for suggesting this.