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Smart Contact Lenses May Deliver Medicine Direct To The Eye

While the eyes may not be the windows of the soul, they are a valuable indicator of health and by incorporating smart technology into contacts, may be able not only to help correct eye conditions, but display information back to the wearer.

The Economist reports on a number of developments in the slightly queasy world of sticking smart things in your eye.

The first smart contact lenses are already on the market. The Triggerfish, created by Sensimed, a spin-off from the Swiss Federal Institute of Technology in Lausanne, is a wirelessly powered contact lens designed to help people with glaucoma manage their treatment. It does this by continuously measuring the curvature of the eye over a 24-hour period using a tiny strain gauge, built using micro-electromechanical system (MEMS) technology, which is incorporated into the lens.

But perhaps rather cooler is the idea of building displays into contacts so that images can be projected directly into the wearers eyes. This proves to be a significant technological problem.

The paper reports on the ground-breaking work of Babak Parviz, a researcher at the University of Washington, in Seattle.

Dr Parviz has already demonstrated that red and blue dots, or pixels, can indeed be embedded in lenses, though green will also be required to create a full-colour display. He has shown that the pixels can be powered wirelessly and he has demonstrated that he can shrink the optics required to bring these dots of light into focus, even when they are so close to the eye. So far, however, the closest Dr Parviz has come to creating an actual display is a lens containing a grid of just eight pixels.

Given the ubiquity of high-definition screens containing millions of pixels this may not seem very impressive. But it is worth remembering that this is much more difficult than creating normal displays. Quite apart from the challenges of powering such a small device and bringing the pixels into focus, the small size of a contact lens means that the pixels will have to be much smaller than those in a typical computer monitor or mobile-phone display in order to provide a similar resolution. “Our smallest ones are about 50 microns across,” he says. “We can definitely make them smaller.” He will have to: a pixel on a high-resolution iPhone screen, by comparison, is about 80 microns (millionths of a metre) across.

by Ben Rooney

Source: http://blogs.wsj.com/tech-europe/2011/06/08/smart-contact-lenses-may-deliver-medicine-direct-to-the-eye/?mod=google_news_blog

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Contact Lens

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Color contact lenses options
Enhancement contact lenses are designed to enhance the color of light eyes. They don’t change your color, but give your eyes a light blue, aqua or green tint. Enhancement color lenses make your eye color brighter and more defined.

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Contact Lenses Supplier and Dealer in India

Contact Lenses

For a long we all have been dependent upon the glasses or specs to supplement our poor vision. However, only a few of us wears them all day long. There is no doubt about the fact that this eye-wear is helpful, but at the same time it irritates most of us. Some cannot carry it for long and their helplessness without the specs, irritates them while others find it inconvenient to wear them in activities like playing sports or wearing a helmet for riding a bike.
No matter how difficult it is for you to suit yourself with spectacles, but the fact is that you have to wear them to correct your vision. However, with the changing technology, not so happening contact lenses have also changed a lot. It is now completely safe to wear contact lenses without any suffering from any irritation in your eyes.
Contact lenses are perfect substitute for glasses, if you do not want to go under knife or laser surgeries. To understand contact lenses let us first see how they are categorized –

1. Soft lenses –
soft lenses are made up with plastic polymer that can combine with water. They have a better application in eye practice since the water present in them allows oxygen to flow to the eyes and enhance the comfort of the wearer.

2. Hard lenses –
hard lenses are made up with silicone polymers that are responsible for facilitating flow of oxygen to the eyes of the wearer. These lenses are much durable as they are made up with a rigid material and therefore could keep their shape intact, but their application is a little uncomfortable as compared to the ease that soft contact lenses offer.
Both soft and hard contact lenses have their own advantages and disadvantages. However, one needs to consider various factors before opting for a proper lens type. You must get the recommendation from your doctor or could straightaway go to the reliable contact lenses India dealers.

If you are looking to buy contact lenses online, then Vision Care is the leading contact lenses dealer in India that can offer you complete consultancy and a perfect lens type that suits your needs and pocket. In the past couple of years, demand for the contact lenses India has increased many folds. Now, you can find a complete range of parameters before choosing contact lenses India. UV protection, range of colors, correction astigmatism and fancy contact lenses with unusual views like crazy, cat and wild eyes, etc. are some of the factors that give you valid reasons to opt for the contact lenses over your glasses or spectacles.
Leading contact lenses dealer in India offers you, a wide range of lenses to choose from and at Vision Care, you can easily shop for lenses online. Shopping contact lenses India with Vision Care is a true pleasure. You can easily find lenses by brands or choose from the wide categories of lenses, place your order online and your contact lenses will be delivered to you at your doorstep. This contact lenses dealer in India also offer promotional schemes for purchase of lenses that give you added benefit to shop online at much cheaper prices. Vision Care stocks a wide variety of lenses like daily, monthly and yearly disposables, colored lenses, toric lenses and multifocal lenses.
Moreover, presence of products from leading brands like Cooper Vision, Ciba Vision, Bausch and Lomb, Johnson and Johnson, etc. combined with wonderful online shopping experience, makes this contact lenses dealer in India, one stop shop for all your contact lenses needs.