They won't answer, but you can observe a very primitive eyespot on these cells. All it does is sense light. These algae have flagellae, so they can swim toward light if they get swept under a rock or water lily, e.g. This eye is intracellular, and basically spherical. This is equivalent to our retina. Squids have an eye that adds a cornea and a spherical, rigid lens, much like fishes, and extrinsic eye muscles.
Mammals have a soft, pliable lens for focusing.
They allow creationists to read their Bibles, even though a bird could read and keep an eye on the kids at the same time. Try some other argument against evolution. References Miller, S.A. and J.P. Harley. Academic Press, London.