Image via TED talk screengrab
Nearly a year ago we talked about Josh Silver, an inventor working to bring affordable eye glasses to everyone in the world who needs them. He invented a set of glasses where the prescription can be easily changed by adjusting an amount of liquid in the lenses. He recently gave a demonstration of the device during a TED talk. Click through to check it out.
Glasses that can easily mass produced, adjusted for any wearer so that they aren't near obsolete when someone's prescription changes, and are built to be highly durable is a great (green!) solution for getting corrective vision to anyone in the world who needs it.
Joshua Silver reckons that around half the world's population needs corrective eyewear, yet has no access to it. His ultra-utilitarian spectacle design relies on the principle that the fatter the lens, the more powerful it becomes. The lenses are filled with liquid, and can be adjusted to different strengths by adding or removing fluid from tiny syringes on each arm, then locked to the right strength.
More than 30,000 of his lenses have been distributed in 15 countries, and a new model will scale that number up to millions.
Meanwhile, keeping what glasses are already out there in the consumer stream and in the hands of people who need them is a great green solution to the problem of access to vision correction. You can donate your old glasses to to someone who needs them, and ensure they don't go to waste.
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