Adjustable Glasses Views
Global Vision 2020 adopts a new approach to the issue through the application of technology by deploying adjustable eyeglasses. This technology allows the recipient to correct their own vision; a process known as 'self-refraction'. Adjustable lenses in spectacles present one of the most promising solution to the developing world's requirements. Global Vision 2020 aims to tackle the vast issue of vision correction globally through the dissemination of self-adjustable eyeglasses through the use of existing aid/development organization distribution networks throughout the world.
The power of the lens is changed by pumping fluid into or out of the central lens reservoir - less fluid causes the flexible membranes to bow inwards due to the reduced internal pressure, and more fluid causes the membranes to expand outwards, as shown in the diagram. This causes the lens to change refractive power, which makes it suitable for adjustable eyeglasses.
Current Bifocals and progressive lenses are static, in that the user has to change their eye position to look through the portion of the lens with the focal power corresponding to the distance of the object. This usually means looking through the top of the lens for distant objects and down through the bottom of the lens for near objects. Adjustable focus eyeglasses have one focal length, but it is variable without having to change where one is looking.
Physician Dr. Stephen Curtin claims to have come up with the perfect eyeglasses for anyone with vision focusing issues (which, after a certain point, is nearly all of us). Unlike the bifocals or trifocals that optometrists typically recommend, Curtin’s unique glasses, called TruFocals, provide a mechanically adjustable lens.
Adjustable Glasses Images
