Try on the CR (6040) DEMO at your local Clarkson Eyecare location. These brown designer eyeglasses from Silhouette are perfect for focusing at work or relaxing at home. Made from metal, these eyeglasses feature a design and can help you see clearly with prescription lenses. At Clarkson Eyecare, we can build a complete pair of Silhouette CR (6040) DEMO just for you, with custom lenses designed for your vision needs.