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There is a significant difference between extended wear contacts and non extended wear contacts, and that is oxygen permeability. The permeability in all contacts slowly drops as the contacts age and build up proteins, which causes swelling in the eye, reduces visual clarity, and can eventually cause severe eye pain. There is no debate or mystery over this, an optometrist can determine exactly how much swelling is occurring in your eye and recommend more permeable lenses or shorter wear periods if necessary. If you sleep with your contacts in every night (as I do) and only remove them after a month, they must be thrown away or they will eventually cause serious problems. I have experienced it myself both from using low permeability lenses, and from using high permeability lenses that were too old for extended periods of time. If you don't mind removing them nightly (as I suspect you do) you might be able to get by with it, but it's not really worth the risk or wasted time in my opinion compared to extended wear and monthly replacement. For the entire month I can forget that I even have contacts!

Tyler

On Nov 30, 2006, at 7:00 PM, LT Don wrote:

I got in close (but not quite THAT close -- she was married to an airline
pilot) with my eye doctor when I was stationed in DC.

Turns out that the disposable contact lenses and the $200-a-pop / clean and reuse contact lenses come off of the same line. The only difference is the
packaging.

Perhaps it is because my first wife was from Maine, but I have that
tight-wad New England sort of stuff now ingrained. I refuse to throw away a good contact lens unless it is ripped. Or so Doctor said, and I trust her.
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