Evaluate the safety and efficacy of the Glaukos Trabecular Micro-Bypass Stent Model GTS400 using the G2-M-IS injector system in conjunction with cataract surgery vs. cataract surgery only, in subjects with mild to moderate primary open-angle glaucoma.

The purpose of this study is to evaluate the safety and efficacy of the Glaukos Trabecular Micro-Bypass Stent Model GTS400 using the G2-M-IS injector system in conjunction with cataract surgery, compared to cataract surgery only, in subjects with mild to moderate primary open-angle glaucoma.

Inclusion Criteria:

• Mild to moderate open-angle glaucoma
• Characteristics consistent with mild/moderate glaucoma
• Use of one (1) to three (3) medications at time of screening exam

Exclusion Criteria:

• Pigmentary or pseudoexfoliative glaucoma
• Prior incisional glaucoma surgery