In one of those internet searches where on thing led to another thing led to a wonderful easter egg (hidden surprise) I found this little gem.
There is just so much information about this *ahem* "amazing" short story that has circulated through SF fans for so long that i'm just going to give the link:
http://ansible.co.uk/misc/eyeargon-intro.html
You can read the story here - preferably out loud in your most dramatic voice possible (without laughing - go on I dare you!)
http://ansible.co.uk/misc/eyeargon.html
http://ansible.co.uk/writing/argon-timeline.html