Anyone who's had an eye exam in the past few decades has stared into an autorefractor—the device, the size of microwave oven and costing up to $20,000, that bounces an infrared beam off the retina to determine the correction needed for an image to come into focus. New York City startup Smart Vision Labs has developed a $3,950 handheld replacement, the SVOne, that utilizes an iPhone's camera, processor, and wireless connection to examine patients anywhere and manage their cases online.
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