Biomedics Toric are weekly disposable contact lenses manufactured by CooperVision. Astigmatism occurs when the cornea has an irregular or severe curve, instead of a normal, smooth, uniform curve. Vision becomes blurred when some light rays entering the eye are focused correctly on the retina while other light rays are not. Biomedics Toric contact lens has a unique design that is exceptionally easy to wear, providing clear vision and exceptional comfort from lens to lens. After two weeks, throw your lenses away and start over with a fresh pair.