A method of cast moulding a multifocal translating contact lens made of flexible material, the method comprising producing a first mould insert having a surface which is used to produce a first mould having an internal face and a second mould insert having a surface which is used to produce a second mould having an external face, wherein the first mould represents a shape of an anterior face of the contact lens and the second mould represents a shape of a posterior face of the contact lens, wherein the first and second moulds (40, 50) are brought together with the external face of the second mould juxtaposed with the internal face of the first mould so as to define a volume therebetween, the volume between the first and second juxtaposed moulds being filled with contact lens material, allowing the contact lens material in the volume to cure to produce the contact lens, wherein the volume defined by the first and second moulds (40, 50) is configured so as to form the contact lens with a lower truncation, wherein volume defined by the first and second juxtaposed moulds (40, 50) has an internal configuration which produces a forwardly projecting ledge at a lower end of the contact lens; wherein the lower truncation and the forwardly projecting ledge of the contact lens are arranged to engage with a lower eyelid of a user to facilitate translation; wherein the first mould insert is formed in two parts, the first part defining the shape of the anterior face and the lower truncation of the contact lens and the second part defining the shape of the forwardly projecting ledge of the contact lens. wherein the first mould represents a shape of an anterior face of the contact lens and the second mould represents a shape of a posterior face of the contact lens, wherein the first and second moulds (40, 50) are brought together with the external face of the second mould juxtaposed with the internal face of the first mould so as to define a volume therebetween, the volume between the first and second juxtaposed moulds being filled with contact lens material, allowing the contact lens material in the volume to cure to produce the contact lens, wherein the volume defined by the first and second moulds (40, 50) is configured so as to form the contact lens with a lower truncation, wherein volume defined by the first and second juxtaposed moulds (40, 50) has an internal configuration which produces a forwardly projecting ledge at a lower end of the contact lens; wherein the lower truncation and the forwardly projecting ledge of the contact lens are arranged to engage with a lower eyelid of a user to facilitate translation; wherein the first mould insert is formed in two parts, the first part defining the shape of the anterior face and the lower truncation of the contact lens and the second part defining the shape of the forwardly projecting ledge of the contact lens. wherein volume defined by the first and second juxtaposed moulds (40, 50) has an internal configuration which produces a forwardly projecting ledge at a lower end of the contact lens; wherein the lower truncation and the forwardly projecting ledge of the contact lens are arranged to engage with a lower eyelid of a user to facilitate translation; wherein the first mould insert is formed in two parts, the first part defining the shape of the anterior face and the lower truncation of the contact lens and the second part defining the shape of the forwardly projecting ledge of the contact lens.