The dollar stores have reading glasses and they seem like the same ones as elsewhere...I sprinkle them around the house eye docs have told me they are OK.
For tying....a headloop magnifier....give that Harbor Freight one a try. ...I found some thing similar at a street fair and really like the feature of being able to flip down to a higher magnification for doing certain maneuvers.
For the computer ....weaker lens since you are sitting farther away
When I'm fishing I use much stronger ones which puts the focal length much closer but it sure helps with those small eyes on the hooks...
[This message has been edited by ducksterman (edited 03 February 2005).]