The present invention relates to a process for manufacturing an object made of biocompatible hydrogel by moulding a polymeric solution in a mould made of a particular material wherein said process comprises the following steps: (i) preparing a polymeric solution by dissolving a copolymer of acrylonitrile and of an olefinically unsaturated comonomer bearing anionic groups in an aprotic solvent optionally in the presence of a non solvent (ii) forming and beginning the gelling of the polymeric solution obtained at the end of step (i) in a mould consisting of a material containing said non solvent or of a material permeable to said non solvent (iii) immersing the object undergoing gelling resulting from step (ii) in a non solvent. The present invention also relates to the objects made of biocompatible hydrogel which result from this process such as for example intracorneal lenses (or lenticules) implantable in the cornea or any other implants usable in ophthalmology.
