Re: NU ideas: by RG, Transistion glasses

ADJUSTABLE GRADE FOR EYEGLASSES Having a poor eyesight is not only frustrating and inconvenient but is also very costly. Imagine spending thousand of pesos every year on lenses because of deteriorating vision. For those who are afraid of lasik surgery and who insistently wear eyeglasses, a technology that can produce this type of eyewear can be very valuable. Manufacturers have already revolutionized this market by creating the transitions where an eyeglass can be both a correction lens and a sunglass at the same time. In this case, a lens can be manufactured which can be adjusted on a certain range for example from -1.0 to -2.0 with increments of -0.25. This way, you can use your eyeglasses for a couple of years longer than those of the ordinary ones. 3