There were two covenanting revolutions (rebellions) in Scotland. Both The first was more spiritual than political, the second was, well, different.
If you are hving as much trouble with your lenses, go back to the clinic that prescribed them. Your eyes are important, let them see what you are living with and ask if there is anything they can do. It may be that your lenses no longer fit properly, or that you could do better with different lens material.
If your contact lens clinic is out of town, go to the eye dept casualty, explain that you hve KC and that your contact lenses are causing pain.
Meantime, there are lots of web pages with stuff about the Covenants. Even the BBC has one
http://www.bbc.co.uk/legacies/immig_emi ... ndex.shtml
Andrew