[1] Univ Arkansas Med Sci, Harvey & Bernice Jones Eye Inst, Dept Ophthalmol, Little Rock, AR USA
[2] Harvard Med Sch, Boston Childrens Hosp, Dept Ophthalmol, Boston, MA USA
[3] Tufts Univ, Sch Med, Dept Ophthalmol, Boston, MA USA
[4] Tufts Univ, Sch Med, Dept Ophthalmol, Ophthalmol, Boston, MA 02111 USA
[5] Tufts Univ, Sch Med, Dept Ophthalmol, Glaucoma Serv, Boston, MA 02111 USA
[6] Tufts Univ, Sch Med, Dept Ophthalmol, Acad & Clin Affairs, Boston, MA 02111 USA