Glasses are one key to improving the economic productivity of poor people in developing countries. Photo: deepchi1 (flickr)

Poor vision may not seem like an economic problem at first glance. But according to the World Health Organization, workers with poor and uncorrected vision cost the global economy hundreds of billions of dollars in lost productivity each year.

Many of these workers struggle to put food on the table, much less purchase an expensive pair of glasses, so their vision problems go untreated. This situation may change thanks to an innovative new series of affordable glasses designs that the New York Times recently highlighted. Their genius lies in two factors: their low cost and how easy it is to adjust them. Production is cheaper when a single model can be made to fit almost anyone, which also cuts out the need for expensive doctors to write vision prescriptions.

How can glasses be one-size-fits-all? One type highlighted by The Times has lenses whose refraction can be adjusted by injecting a clear liquid into them, while another has overlapping lenses that can be adjusted by the user. These models are already improving the lives of wearers in countries like Rwanda, Afghanistan, Ghana, and Tanzania and cost $19 and $4, respectively.

Despite their potential, low-cost eyeglasses still face problems. As The New York Times explains, the glasses could cost only $1-2 per pair if produced in great enough volumes, but supply chains don't yet exist to distribute such quantities of glasses to those who need them.

The field of low-cost eyeglass production and distribution is in its infancy, but keep your eyes open for great things to come.

Could Wall Street's bull charge for good? Photo: iHeylen (flickr)

If Wall Street's excesses contributed to the decline of the nation's economy, could the same profit-driven environment really spawn a new generation of do-gooders?

Absolutely, says Wall Street Journal columnist David Weidner, and it's a process that's already begun, exemplified by those who seek profit by selling to poorer consumers. (I wrote about this general trend for Global Envision in "Slashing Health Care Costs, and Slashing, and Slashing", "How to Irrigate on a Shoestring", and Selling to the Poor, On Terms They Can Afford".)

Such entrepreneurs may be guided by a social conscience when they choose the products to fund and invest in and they may be willing to wait a little bit longer to turn a profit, but profit is still the end goal. "This new breed of Wall Streeter has turned the maxim 'greed is good' into 'greed can do good,'" explains Weidner.

A paragon of this model is The Acumen Fund, a non-profit venture fund that invests in business and entrepreneurial solutions to poverty. Its projects include replacing kerosene lamps with the safer and more affordable LED lamps, and pay-per-use toilets in Kenya.

Heidi Krauel, The Acumen Fund's founder, goes further "This is one of the new faces of capitalism," she says. For those just beginning to enter the world economic system, this is certainly good news.

Innovative practices in Indian health care are make surgeries more affordable. Photo: World Bank Photo Collection (flickr)

The numbers alone say a lot: A heart surgery that costs between $20,000 and $40,000 in the United States can cost only $2,000 in India.

The medical tourism industry has always taken advantage of lower health care costs in India and other developing countries. Some, however, are thinking beyond that. The Wall Street Journal recently profiled Dr. Devi Shetty, an Indian physician who has radically rethought the way heart surgery is managed and priced to make it more affordable than ever before.

Quite simply, Dr. Shetty is making heart surgery cheaper by doing more of it, says The Journal. The heart hospital he opened in India has 1,000 beds (the average U.S. hospital has 160 beds), and the sheer number of surgeries it performs gives it a lot of bargaining power for the equipment that it buys — carefully chosen for its cost. His physicians do more surgeries per day and repeat the same procedure more often than American doctors, giving them invaluable experience and expertise. Dr. Shetty plans to expand his private hospital complex significantly in the the next five years — a move that will give him even more leverage over suppliers.

Dr. Shetty's cost-cutting drive was propelled by a desire to make heart surgery affordable for Indians, after he understood the incompatibility of expensive health care and poverty. $2,000 for a life-saving surgery can be prohibitively expensive for some Indians, so many patients pay their medical bills through a special insurance plan developed by Dr. Shetty, in partnership with government officials from the state of Karnataka.

Dr. Shetty suspects that this kind of health care is likely to appeal to Westerners as well. He plans to open another hospital in the Cayman Islands specifically to serve Americans who want to lower their own health bills.

A homemade drip-irrigation system. Photo: Care of Creation (flickr)

Flood irrigation: that's how poor farmers in developing countries usually water their crops. It's wasteful and too water-intensive to work in the dry season, but until recently there haven't been other viable options — a traditional drip irrigation system could cost thousands of dollars.

But social entrepreneurs like Paul Polock and the California-based company, Driptech are working to change this by helping poor farmers set up low-cost drip irrigation systems. Driptech can sell their irrigation system for $30 in places like India, China and Ethiopia, because they use cheaper materials and have developed a new (top-secret) method for punching the holes in the irrigation tubes, according to the San Francisco Chronicle.

As Business Week notes, the technology could be transformative:

Experts say low-cost irrigation could alter the economics of food. Subsistence farmers may be able to grow excess crops they can sell. Countries that rely on food imports could see their dependence on outsiders decline.

The innovation has allowed poor farmers to save "water, labor, and time — all while growing a valuable dry-season crop that greatly increased their annual income," boasts Driptech's website.

Driptech plans to relocate their manufacturing facilities to the countries where their products are sold. The company's blog notes that this "will help support the local economies while cutting out transportation costs and headaches."

Selling redesigned products to the poor can be a profitable business model, as some companies in India have also discovered. (I wrote about this phenomenon in "Selling to the Poor, On Terms They Can Afford"). In line with this trend, Driptech expects to make money while helping poor farmers start to turn a profit of their own.

A new, low-cost water filtration system will make it easier for poor Indians to access clean drinking water. Photo: Jackol (flickr)

Here's some conventional marketing wisdom: People who live on less than $2 per day simply aren't a worthwhile target demographic.

But recently, some Indian companies are challenging such ossified thinking with innovative products designed to fit the needs of India's poor, reports The Wall Street Journal:

Such inventions represent a fundamental shift in the global order of innovation. Until recently, the West served rich consumers and then let its products and technology filter down to poorer countries. Now, with the developed world mired in a slump and the developing world still growing quickly, companies are focusing on how to innovate, and profit, by going straight to the bottom rung of the economic ladder.

As the Wall Street Journal explains, Indian companies started to change the way they looked at impoverished consumers after they snapped up low-priced cell phones. Then companies began to design products that they hoped would find a similarly huge demand. Soon, Tata Motors released the Nano car, a small $2000 vehicle that made car ownership a possibility for a whole new slice of Indians since it sold for less than half the price of the next-cheapest car on the Indian market. Tata plans to export a more luxurious version of the Nano to Europe — providing an example of how the goods designed for local markets could increase global competition between Indian and Western companies.

There are several other examples of products redesigned with the poor in mind. Cheap battery-powered refrigerators are a huge help to families without electricity in their homes. The solar-powered cell phone base station won third place in The Wall Street Journal's Technology Innovation Awards earlier this year. And the introduction of mobile banking is revolutionizing banking and money transfers in rural areas via cell phones in many poor countries.

It's a newer way of thinking about poverty, and one driven by bottom-line concerns: How can firms sell the poor what they need now, rather than waiting until they have the money to buy what others already have?

Have you heard of "appropriate technology?" It's a movement that helps the world’s poorest people with affordable, simple and practical inventions that address every day problems.

Some examples include:

• The Q-Drum, a circular drum that allows women and children to transport water by pulling a rope attached to the jug as it rolls on the ground, instead of carrying it on their heads.
• The Lifestraw, a portable, filtered drinking straw that allows water to be safely sipped from rivers, lakes and ponds.
• The Solar Home Lighting System, which allows children to study at night using solar-powered screens instead of electricity.

"We need to see the poor as customers rather than charity recipients," says Paul Polak, one of the notables in the appropriate technology movement. "We need a revolution in how multinationals design, price and market their products. There is a huge virgin market out there!"

Explore photos and videos of more inventions at Design for the Other 90%, the website for an exhibit currently touring U.S. museums.