New binoculars help cataract patients choose replacement lenses

SimVis was designed to help cataract patients choose implantable lenses. (Image by Yaiza Gonzalez/ CSIC Communication)

Researchers in Spain have developed a device that simulates the improved vision that a cataract patient can have before corrective surgery even takes place.

The scientists at the Spanish National Research Council’s Institute of Optics in Madrid compared the visual acuity obtained at different distances through a commercial trifocal lens (with focal points for close, intermediate and long focal distances), through the same lens simulated by a spatial light modulator, and through SimVis, a technology they developed that contains an optotunable lens working in a temporal multiplexing mode.

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