Monday, August 10, 2009

TruFocals Offer New Option For Presbyopic Eyes

Filed under: Ophthalmology

Dr. Stephen Kurtin, an inventor and a physicist with a degree from Caltech, has been working on adjustable eye glasses for the last two decades, trying to overcome the disadvantages of bifocals and progressive lenses. His work has finally led to a commercial product, called TruFocals, which features a slider above the nose bridge that changes the focal point of the lenses in real time. The glasses use a conventional lens co-axially paired with a distensible membrane, and a clear liquid resides between the two. The shape of the liquid can be adjusted precisely via the slider activated membrane, providing a selectable focal range that you can change depending on what you're looking at.

Here's Stephen Kurtin presenting the TruFocals:

Product page: TruFocals...

Review of TruFocals by John Markoff at the New York Times...

Flashback: Water Power in Developing World to Cure Poor Eyesight

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