Infrared triggered smart contact lens for the treatment of presbyopia

A switchable contact lens prototype was fabricated and tested with integrated off the shelf electronic components to drive a liquid crystal (LC) active lens element. This prototype was capable of changing its focal power by an average of +1.9D, but a maximum of +3.2 ± 0.2D was also measured. Switchable focus contact lenses are intended to help restore functional near and intermediate vision accommodation to those suffering from presbyopia, an inevitable age-related eye condition. The custom poly-methyl-methacrylate contact lens substrates used in this prototype are equivalent to commercially available scleral contact lenses. It was discovered that more careful design considerations are needed when at least one of the substrates is