I understand it's an expensive gizmo, (iirc about $2500) but the McCarthy Observatory in New Milford CT has a fiber optic eyepiece extender.
It looks sort of like a black garden hose, and a wheelchair bound visitor can use it to see through the observatory telescopes.
I've never seen it in use so I can't tell you more, but I'm sure you could contact them for more information if you're interested.
The web page that mentions this device is:
http://www.mccarthyobservatory.org/obsmain/about/abmenu9.htm
Good luck.
It looks sort of like a black garden hose, and a wheelchair bound visitor can use it to see through the observatory telescopes.
I've never seen it in use so I can't tell you more, but I'm sure you could contact them for more information if you're interested.
The web page that mentions this device is:
http://www.mccarthyobservatory.org/obsmain/about/abmenu9.htm
Good luck.