Glaucoma is a leading cause of blindness worldwide. Non-adherence to glaucoma medication, which may result in loss of vision, is known to be prevalent. Available information regarding adherence to prescribed medical therapy suggests that some apparent treatment failures may actually be due to non-adherence. The investigators' specific aim is to conduct a study that will examine the effect of a glaucoma educator intervention on adherence to topical glaucoma therapy. The investigators' hypothesis is that patient education and counseling delivered by a trained glaucoma educator, through both planned visits and telephone contacts, will increase adherence to topical glaucoma therapy.

Inclusion Criteria:

• Diagnosis of primary or secondary open angle glaucoma.
• Currently on monotherapy drop treatment for glaucoma.
• Age > 18 years.
• Patient has presented for care at the Rocky Mountain Lions Eye Institute Glaucoma Center.

Exclusion Criteria:

• Inability to independently administer eye drops due to physical disability as reported by the patient.
• Cognitive impairment that would interfere with the ability to self-administer medications as evidenced by a TICS score < 16.
• Patients who demonstrate > 80% adherence to glaucoma treatment during the 30 day run-in period.
• It is anticipated that the patient will require glaucoma surgery within the next six months.