Visual snow syndrome involves flickering dots in your field of vision. It’s unclear what causes it, but experts suspect it has neurological origins. Share on Pinterest Alexander Spatari (street), ...

Participants donning thick-lensed stereo glasses grab virtual shapes in front of them, gesturing as if the boxes were real. The subjects place their heads in chin rests to keep their heads from moving ...

Middle-aged adults who suddenly need reading glasses, patients with traumatic brain injuries, and people with visual disorders such as "lazy eye" may have one thing in common -- "visual crowding," an ...