Her eye chart tests showed improvement. It took a radical experiment to find out why her reality wasn’t matching up. By Lisa Sanders, M.D. The burning started as soon as the 59-year-old woman ...

The eye chart has letters that go from large to so very small. You stand 20 feet back covering one eye at a time and read. But what about our dogs?

The classic eye chart wall poster is getting an upgrade, with newcomer Heru looking to bring vision tests into virtual reality. Using commercially available headsets, the company is developing an ...