Try on the CX (5540) DEMO at your local The EyeDoctors Optometrists location. These green 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 The EyeDoctors Optometrists, we can build a complete pair of Silhouette CX (5540) DEMO just for you, with custom lenses designed for your vision needs.