A vision enhancing device for a person having macular degeneration of the retina, comprises a lens and a light diverging surface on the lens that symmetrically diverges away from the eye at an angle relative to an optic axis to redirect incident light away from the optic axis outwardly toward an un-diseased...http://www.google.de/patents/US7488069?utm_source=gb-gplus-sharePatent US7488069 - Vision enhancing device
