A multifocal ophthalmic device comprising a lens body that is formed by a plurality of concentric annular zones having surfaces separated by inclined steps having surfaces, in which said surfaces of said concentric zones effect both diffraction and refraction of light incident, while said surfaces of said steps are practically devoid of any diffractive or refractive power, and in which at least one zone of said plurality of concentric zones has a diffraction pattern formed on the corresponding surface, such that a power The diffractive surface of said surface gradually decreases through said surface, and wherein said lens body comprises a copolymeric composition comprising a polymeric structure composed of a plurality of structural units covalently bonded together, said structural units being derived of a monomer prepolymerization mixture comprising: a first aromatic acrylate monomer, characterized by forming a first homopolymer having a refractive index that is between 1.50 and 1.53, when measured according to a standardized procedure, and that it has a Tg, measured according to a standardized procedure； a second aromatic acrylate monomer, characterized by the formation of a second homopolymer having a lower Tg in a range of 2 ° C to 30 ° C than said Tg of said first homopolymer, when measured according to a standardized procedure； a third monomer, characterized by the formation of a third homopolymer having a Tg of less than 35 ° C； a fourth monomer, characterized by the formation of a fourth homopolymer that is capable of absorbing water up to at least 20% of the total weight of said fourth homopolymer when measured in accordance with a standardized procedure； and a fifth monomer, which is a crosslinkable monomer, in which: a concentration of said first aromatic acrylate monomer is comprised between 50% and 60% of the total weight of the composition； a concentration of said second aromatic acrylate monomer is comprised between 15% and 20% of the total weight of t
