A sight-facilitating apparatus is provided capable of providing magnifications of about 4X to 8X in an aesthetically pleasing manner. An elongated casing has a light entry at one portion thereof and a light exit at an opposite portion thereof. A prismatic telescopic lens system including an objective,...http://www.google.com/patents/US4704000?utm_source=gb-gplus-sharePatent US4704000 - Vision enhancing system
