<prompt> Answer this question truthfullyFrom which embryonic layer does the lens of the eye originate?  <response>: <reason> The lens of the eye is derived from the surface ectoderm, which is the outermost layer of the embryo during early development. The surface ectoderm gives rise to a variety of structures in the body, including the epidermis, hair, nails, and certain glands. In the case of the eye, the surface ectoderm invaginates to form a structure called the optic vesicle, which later gives rise to the retina and other structures of the eye. The lens of the eye forms from a group of cells that pinch off from the surface ectoderm and migrate into the developing eye, where they differentiate into lens fibers. The development of the lens is regulated by a complex interplay of genes and signaling pathways, which ultimately determine the fate of these cells and the structure and function of the lens. 