US Patent 7857448 Astigmia correcting eyeglasses

An astigmia correcting eyeglasses includes two non-transparent lenses respectively provided with a plurality of cone-shaped through holes. The cone-shaped through holes respectively have a larger diameter at an inner side than that at an outer side. The cone-shaped through holes located nearer the circumference of the lens have a larger inclined angle at the side near the circumference of the lens than those located in the center portion of the lens. Therefore the focusing function is intensified by the cone-shaped through holes, which does not obstruct the viewing lines of a user, so that there may not occur dead angles, or blind spots in using the astigmia correcting eyeglasses according to the invention.