[1] Univ Oklahoma, Hlth Sci Ctr, Dept Ophthalmol, Oklahoma City, OK USA
[2] Univ Oklahoma, Hlth Sci Ctr, Dept Ophthalmol & Cell Biol, Oklahoma City, OK USA
[3] Dean A McGee Eye Inst, Oklahoma City, OK USA
[4] Oklahoma Med Res Fdn, Oklahoma City, OK 73104 USA