Maddox Rods Manufacturers

The Maddox rod is a device used in the diagnosis of extraocular muscle imbalance. It consists of a series of powerful convex cylindrical lenses mounted side by side in a trial lens. The patient views a distant white point source of light through the Maddox rod, which is placed close to the eye. It consists of a row of such cylinders, and thus a row of foci are formed on the retina. These foci join up and are seen as a line of light, which lies at 90° to the axis of the Maddox rod.