Biomedics 55 Premier contact lenses are aspherical contact lenses that correct for aberrations a patient may have in their eye. Biomedics 55 Premier focuses light to a common focal point, allowing you to see with clearer, sharper vision. These contact lenses are weekly disposable lenses and there are 6 lenses per box. This product is also known as Ultraflex, Medflex, Polysoft, Proflex, Softmed, Target, Aqualens, Flextique, and Versaflex. These brands are all the exact same product.