Eyeglasses; sunglasses; spectacles; frames for eyeglasses, sunglasses and spectacles; lenses for eyeglasses, sunglasses and spectacles; interchangeable lenses for eyeglasses, sunglasses and spectacles; polarising lenses, UVA protective lenses, anti-fog lenses, and anti-scratch lenses for eyeglasses, sunglasses and spectacles; magnets; eyeglasses, sunglasses and spectacles incorporating magnets; and frames for eyeglasses, sunglasses and spectacles incorporating magnets