BOSTON (Nov. 7, 2013) – More than a million Americans suffer from hemianopia, or blindness in one half of the visual field in both eyes as the result of strokes, tumors or trauma. People with ...

Pupillary distance helps center your eyeglasses prescription. Your eyeglasses provider normally measures it for you, but you won’t find it on your prescription. If you order glasses online, you’ll ...

A multi-center study determined that real peripheral prism glasses are more helpful than sham peripheral prism glasses for patients with hemianopia during every day walking. More than a million ...

Optical Prisms are used to redirect light at a designated angle. Optical Prisms are ideal for ray deviation, or for adjusting the orientation of an image. An Optical Prism's design determines how ...