[1] Retina Fdn Southwest, Crystal Char Ball Pediat Vis Evaluat Ctr, Dallas, TX USA
[2] Pediat Ophthalmol, Dallas, TX USA
[3] Ctr Adult Strabismus, Dallas, TX USA
[4] Pediat Ophthalmol & Adult Strabismus, Plano, TX USA
[5] Univ Texas Southwestern Med Ctr Dallas, Dept Ophthalmol, Dallas, TX USA