Abstract: A binocular magnifier which has a convex lens for the right eye retained in front of the right eye and a convex lens for the left eye retained in front of the left eye. The convex lens for the right eye is disposed eccentrically in such a manner that the optical axis of the lens is parallel to the visual axis of the right eye in the short-distance working region and located on the side of the visual axis of the right eye which is closer to the left eye. The convex lens for the left eye is disposed eccentrically in such a manner that the optical axis of the lens is parallel to the visual axis of the left eye in the short-distance working region and located on the side of the visual axis of the left eye which is closer to the right eye. The two convex lenses are spliced together in one unit at the median position between the right and left eyes.