For the more than 200 million people around the world who don't have 20-20 vision, a pair of glasses can bring the world into focus. Contact lenses put the corrective lens right on the eye and laser eye surgery actually changes the shape of the cornea, the protective layer that rests above the eye's lens and the iris.
Israeli researchers say their "nano" eye drops could provide a simple alternative to all of us. The idea is really to... to change, find a way to modify the trajectory of light with eye drops, just by not changing the shape as we are doing with glasses, contact lenses or laser refractive surgery, but by modifying the refractive index of the cornea. So we could just play with the lens and change the trajectory in order to have all the light in focus.
The procedure is designed to be performed mostly at home with a smart phone app that measures the adjustment required for sharp vision.
As soon as it have (has) the number you need to correct from home, then you will clip a small device, inside this device it will have small laser sews that can etch and put an optical pattern that he can draw really at the surface of the cornea and just to open the door to the nano-particles.
The synthetic nano-particle solution would fill the tiny etched pattern on the cornea. So light is in focus when it hits the retina. Initial tests on fresh pig eyes analyze reflective errors before and after adding “nano” drops and found the drops corrected vision problems for several hours. The next phase of experiment would determine how long the “nano” drops remain effective. They hope the procedure will be ready for use by the end of next year.
I'm Faith Lapidus, VOA News.