Discover Ray-Ban Eyeglasses Unisex RB5286 OPTICS - Tortoise frame Clear lenses 51-18. Eyeglasses Ray-Ban RX5286, with Frame Squared in acetate, they offer a modern and decisive look. The brown color completes the structured design, perfect for those looking for a strong definition in their style. Recommended for round and oval faces, since they add corners and definition to the softer features. Ideal for men and women.