[1] King Faisal Specialist Hosp & Res Ctr, Dept Genet, Riyadh 11211, Saudi Arabia
[2] King Khalid Eye Specialist Hosp, Riyadh, Saudi Arabia
[3] Thomas Jefferson Univ, Wills Eye Inst, Philadelphia, PA 19107 USA
[4] Wills Eye Inst, Philadelphia, PA USA
[5] Our Ladys Childrens Hosp, Natl Ctr Med Genet, Dublin, Ireland
[6] Our Ladys Childrens Hosp, Dept Ophthalmol, Dublin, Ireland
[7] Alfaisal Univ, Coll Med, Dept Anat & Cell Biol, Riyadh, Saudi Arabia