Table 1: Some of the risk factors for VF progression in major eye studies

Factors		Studies
Increasing age		AGIS, CIGTS, EMGT, OHTS, EGPS
African ancestry		AGIS, CIGTS, CNTGS
VF severity		EMGTS, AGIS, OHTS, EGPS
Diabetes mellitus		AGIS, CIGTS
Disk hemorrhage		EMGT, CNTGS
Follow-up IOP		EMGT, CNTGS
Cup-to-disk ratio		OHTS, EGPS
Central corneal thickness		OHTS, EGPS
Pseudoexfoliation syndrome		EMGT
Presentation IOP		EMGT
Female gender		CNTGS
Male gender		AGIS

Note: AGIS: Advanced glaucoma intervention study; CIGTS: Collaborative initial glaucoma treatment study; EMGT: Early manifest glaucoma trial; OHTS: Ocular hypertension treatment study; EGPS: European glaucoma prevention study; CNTGS: Collaborative normal tension glaucoma study