Tuesday, July 02, 2013

Contact Lens with 2.8x Optical Zoom

Petapixel reports: [edited]

An international team of researchers have developed the world’s first telescopic contact lens — a 1.17mm thick pair of contact lenses that, when you want them to, will magnify your vision by 2.8x.

The lenses use patterned aluminium mirrors to reflect the incoming light rays four times, magnifying the resulting image and correcting for chromatic aberrations in the process. The magnified image is then projected onto the edge of your retina.

Each lens comes with a clear portion in the middle that allows light through unaffected, and a telescopic portion on the outside. In order to allow users to choose between magnified and unmagnified sight, they equipped the lenses with a polarizing filter in front of the clear portion, so that switching between the two is as easy as putting on a pair of polarizing 3D glasses.

People with age-related macular degeneration (or AMD) suffer from degradation of the high-resolution fovea at the centre of the retina. These contacts project a magnified image on the lower-resolution perifovea, greatly enhancing these peoples’ ability to see details like text.

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