About the eyeball wall, which of the following descriptions are correct?
A.The cornea occupies the anterior 1/6 of the fibrous tunic.
B.The sclera is a transparent (透明的) and non-vascular structure.
C.In the center of the iris is the pupil.
D.The ciliary body is a part of the vascular tunic and has the function to secrete the aqueous humor (
E.The retina can be divided into two parts: ciliary part and optic part.
正确答案是ACD