En effet, lors des livraisons ultérieures, il suffit que le client signale au vendeur le type de lentilles qui lui a été remis lors de la première livraison et communique à celui-ci la modification éventuelle de sa vue constatée par un médecin ophtalmologiste.
When lenses are supplied subsequently, it is sufficient that the customer advise the seller of the type of lenses which were provided when lenses were first supplied, and inform the seller of any change in his vision as measured by an ophthalmologist.