Abstract: A composite collagen hydrogel material for use in tissue engineering, and an implantable ophthalmic device comprising such composite material. The composite material comprises: a first collagen network comprising collagen crosslinked with a first crosslinking agent, and/or a second collagen network comprising collagen crosslinked with a second crosslinking agent, and a three dimensional collagen mesh comprising partially and plastically compressed collagen hydrogel with a compression degree of 50-95%, wherein the three dimensional collagen mesh is embedded in the first collagen network and/or second collagen network, and the first collagen network and/or the second collagen network and the three dimensional collagen mesh are physically and chemically interconnected in the composite collagen hydrogel material.