Given that 'Quantum of Solace' is the only Bond film to be a direct sequel, it made sense that the posters be linked. So QoS features the left eye to Casino's right, except this time, given the plot of the film, the emotional eye is weeping water. Delicious Bolivian water. It also helps that QoS features an enormous eye in the dramatic opera house Tosca sequence.
Tomorrow: 'Diamonds are Forever'!