[1] United Med Res Inst, Inglewood, CA USA
[2] Univ Calif San Diego, Shiley Eye Inst, Hamilton Glaucoma Ctr, La Jolla, CA 92093 USA
[3] Addenbrookes Hosp, Eye Dept, Cambridge, England
[4] Cambridge NIHR Biomed Res Ctr, Cambridge, England
[5] Bausch Lomb, Clin Affairs, Bridgewater, NJ USA
[6] Univ Calif San Diego, Dept Ophthalmol, La Jolla, CA 92093 USA