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User-Adjustable Glasses
DrLudicrous writes "An Oxford University professor has come up with a way to manufacture adjustable glasses. The lens is made up of silicone oil, which when added or removed changes the curvature, and thus the strength of the lens. Apparently, these are inexpensive enough to distribute to the poor people's of rural Ghana, who do not have the opportunity to see a doctor, let alone afford conventional glasses."
I could donate my current glasses. The threads are stripped on the screw that holds the right lens in. It's now held in by a strand of wire stripped from a CAT5 cable. These third world nations could be supplied with our used glasses but to maintain them they would also require advanced technology such as needlenosed pliers, computers and a reason to have CAT5 cable such as the internet. However, once they get all those then they will be too busy to get around to getting a decent pair of glasses.