Try on the The Stewart at your local The EyeDoctors Optometrists location. These crystal designer eyeglasses from Penguin are perfect for focusing at work or relaxing at home. Made from plastic, 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 Penguin The Stewart just for you, with custom lenses designed for your vision needs.