[1] Alcon Res Ltd, Glaucoma Res R2 41, Ft Worth, TX 76134 USA
[2] Gifu Univ, Dept Ophthalmol, Gifu, Japan
[3] Univ Iowa, Dept Ophthalmol & Visual Sci, Iowa City, IA USA
[4] Univ Iowa, Dept Pediat, Iowa City, IA 52242 USA
[5] Univ Iowa, Howard Hughes Med Inst, Iowa City, IA 52242 USA