Younger ( vs older ) age at surgery conferred an increased risk for glaucoma ( 26 % vs 9 % , respectively ) at 4.8 years after surgery ( HR , 3.2 ; 95 % CI , 1.2-8 .3 ) , and smaller ( vs larger ) corneal diameter showed an increased risk for glaucoma + glaucoma suspect ( HR , 2.5 ; 95 % CI , 1.3-5 .0 ) .