The Cartier CT0340O eyeglasses keep things clean and confident. This is a softly rectangular frame from the C de Cartier line, cut from glossy black acetate. The shape is easy to wear and quietly modern, with smooth rounded corners.

The Cartier detail

The oval C de Cartier logo sits on each temple in metal. A metal core with the godron decor runs through the inside of the temple, visible through the acetate. These are the small, precise touches that mark a Cartier frame.

The fit

The lenses are 51mm wide. The bridge is a wide 22mm and the arms are 145mm. That wider bridge gives a balanced, comfortable fit. It is unisex by design and works on a range of faces. Black pairs with absolutely everything.

Ready for your prescription

These are optical frames. They come with clear demo lenses. Your optician fits your prescription, from single vision to progressive. The acetate rim holds the lenses securely.

Who it suits

This pair suits anyone who wants understated designer eyewear. The Cartier CT0340O eyeglasses read sharp at work and easy at the weekend. For everyday luxury in classic black, they are an easy yes.

Everyday luxury

Not every designer frame needs to shout. This one proves the point. The soft rectangular shape goes with almost everything, from a suit to a simple knit. The wider bridge keeps it comfortable through long days. Each pair arrives in a Cartier case. It reads sharp on a video call and easy at the weekend. For quiet, wearable luxury, black is the safe and stylish choice.

Every Cartier frame here is genuine designer eyewear, crafted to the exacting standard the house is known for. Each pair is ready for your prescription lenses, whether single vision, blue light or progressive. To compare a few options side by side, discover more designer eyeglasses or browse the wider eyeglasses range at Optica.