Please contact the study coordinator at your nearest AIG Study Clinical Center for a screening visit to determine whether you are eligible to enroll.

To enroll in the AIG Study, a subject must:

	Be between the ages of 40 and 79 years of age;
	Have best-corrected vision of 20/40 or better;
	Have had no previous eye surgery (except cataract surgery);
	Not have any other eye disease that can create vision problems (other than glaucoma);
	Be willing to commit to fully completing the study.

SUBJECTS WITH NORMAL EYES

The subject has no signs of glaucoma changes in either eye.

EYES AT RISK FOR DEVELOPING GLAUCOMA (GLAUCOMA SUSPECT AND PRE-PERIMETRIC GLAUCOMA)

The eye has a risk factor for developing glaucoma or show early signs of developing glaucoma. The risk factors include increased IOP and a fellow eye being diagnosed with glaucoma. Signs may include changes to the optic nerve and retina. However, these eyes have a normal or borderline visual field test.

EYES WITH GLAUCOMA (PERIMETRIC GLAUCOMA)

The eye definitely has glaucoma, based on both an abnormal optic nerve appearance and abnormal visual field tests.

Patients with normal eyes will be compensated $50 per visit for their participation. Compensation will not be provided for subjects in either the glaucoma group or the at-risk group. Advanced imaging test, other study-specific tests and extra study visit are provided without charge. Visit and treatments that are considered part of routine care will be charged to the patients or their insurance. All participants will receive free parking.

The AIG Study is in the active recruitment phase. We are recruiting a total of 665 patients: 170 for the normal eye group, 175 for the already-diagnosed glaucoma group, and 320 for the at-risk or glaucoma group.