I've just turned 62 and have been wearing contacts since 1980 wear them all day every day no problems ,I am short-sighted but have the power (prescription) on my lenses set so I can see best at distance which is good for my job as a truck driver and of course hunting, I think you can get bi-focal contacts now but I just carry a cheap pair of reading glasses to read better up close .
The brand of contacts I've been wearing for the last ten years or so are called PureVision by Bausch&Lomb, I do remember wearing them continuously when I first got them but its not good for the health of your eyes long term so always take them out every night which you just get used to.
When out hunting camping under a fly etc it is a bit of a pain putting them in first thing and taking them out again before going to sleep and often in the dark to but ya get used to it .
Occasionally you will get a bit of dust or grit in your eyes but generally no problems, I can only think of once in all those years where I lost a contact from one eye out hunting but nowadays always carry a spare set with me.
Cheers
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