An insert assembly for the purpose of an injection mold for manufacturing a first casting mold half of a casting mold for manufacture of an ophthalmic device, wherein the insert assembly is receivable in an injection mold half of the injection mold and wherein the insert assembly includes an insert assembly end surface which bounds an injection mold cavity of the injection mold for forming a first casting mold half. The insert end surface is provided with at least one notch which forms a bounding structure cavity for forming a bounding structure which is an integral part of the first casting mold half to be formed with the injection mold and which, after placement of a second casting mold half on the first casting mold half, bounds at least one haptics cavity which links up with a lens cavity, wherein the haptics cavity is so configured that in use of the casting mold, after curing of monomeric material deposited in the casting mold, an intraocular lens is formed which comprises a lens and integrally formed-on haptics.