Stanford University researchers have developed prototype glasses that automatically restore proper vision to people who ordinarily would need multifocal progressive lenses.
The autofocals work much like the lens of the human eye, with fluid-filled lenses that bulge or narrow as the field of vision changes.
The device incorporates eye-tracking sensors that triangulate where a person is looking and determines the precise distance to the object of interest.
While the researchers did not invent the lenses or eye-trackers, they did develop the software system that harnesses eye-tracking data to keep the fluid-filled lenses in constant, perfect focus.
The researchers tested the prototype on 56 individuals with presbyopia. In tests, subjects said the autofocals performed better and faster than traditional progressive lenses for reading and other tasks.
From Stanford News
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