Posts tagged vision

An admirer wrote Helen Keller to ask what she had "seen" while being photographed on the observation deck of the Empire State Building. The blind-deaf author responded beautifully and at length. It's an amazing letter, and stunning how her descriptions are so deeply, richly metaphorical—stunning, but not surprising. "Perhaps," she wrote, "I beheld a brighter prospect than my companions with two good eyes."

re: horizons of the possible, new york, seeing, vision

Nate:

But what of the Empire Building? It was a thrilling experience to be whizzed in a “lift” a quarter of a mile heavenward, and to see New York spread out like a marvellous tapestry beneath us.

There was the Hudson – more like the flash of a sword-blade than a noble river. The little island of Manhattan, set like a jewel in its nest of rainbow waters, stared up into my face, and the solar system circled about my head! Why, I thought, the sun and the stars are suburbs of New York, and I never knew it! I had a sort of wild desire to invest in a bit of real estate on one of the planets. All sense of depression and hard times vanished, I felt like being frivolous with the stars.

I wonder if the binoculars approach outlined here would work equally well for our contemplation of cultural goods (and not-so-goods).

re: horizons of the possible, pain, psychology, science, seeing, vision

Nate:

The next time you stub your toe, take out a telescope and look at your foot through the wrong end: According to researchers at Oxford University, such visual distortions have a powerful effect on how we perceive pain.

The scientists found that subjects who looked at a wounded hand through the right end of a pair of binoculars felt more pain and experienced increased swelling in that limb. But when the binoculars were flipped around, the suffering and swelling were lessened dramatically.

In the US there is one optometrist for every 8,700 people, in sub-Saharan Africa the ratio is 1:1,000,000. One way to address the disparity: make cheap glasses that can be calibrated by their users.

re: africa, asia, development, glass, horizons of the possible, medicine, poverty, technology and change, vision

Nate:

Some 30,000 pairs of his spectacles have already been distributed in 15 countries, but to Silver that is very small beer. Within the next year the now-retired professor and his team plan to launch a trial in India which will, they hope, distribute 1 million pairs of glasses. The target, within a few years, is 100 million pairs annually. With the global need for basic sight-correction, by his own detailed research, estimated at more than half the world’s population, Silver sees no reason to stop at a billion.

If the scale of his ambition is dazzling, at the heart of his plan is an invention which is engagingly simple. Silver has devised a pair of glasses which rely on the principle that the fatter a lens the more powerful it becomes. Inside the device’s tough plastic lenses are two clear circular sacs filled with fluid, each of which is connected to a small syringe attached to either arm of the spectacles.

The wearer adjusts a dial on the syringe to add or reduce amount of fluid in the membrane, thus changing the power of the lens. When the wearer is happy with the strength of each lens the membrane is sealed by twisting a small screw, and the syringes removed. The principle is so simple, the team has discovered, that with very little guidance people are perfectly capable of creating glasses to their own prescription.