DE-111 Against Tafluprost Ophthalmic Solution 0.0015% Alone and Concomitant Use of Tafluprost Ophthalmic Solution 0.0015% Plus Timolol Ophthalmic Solution 0.5%

A Double-masked Study of DE-111 Ophthalmic Solution Versus Tafluprost Ophthalmic Solution 0.0015% Alone and Concomitant Use of Tafluprost Ophthalmic Solution 0.0015% Plus Timolol Ophthalmic Solution 0.5% in Patients With Primary Open Angle Glaucoma or Ocular Hypertension -Phase 3, Confirmatory Study-

DE-111 ophthalmic solution will be evaluated for superiority in comparison with Tafluprost 0.0015% ophthalmic solution, or for non-inferiority in comparison with Tafluprost 0.0015% and Timolol ophthalmic solution 0.5% used concomitantly, in IOP(intraocular pressure) -lowering effect in primary open-angle glaucoma or ocular hypertension patients, in a multicenter, randomized, double-masked, parallel-group comparison study. Safety will be compared and evaluated as well.

Inclusion Criteria:

• Diagnosed with primary open angle glaucoma or ocular hypertension
• Provided signed, written informed consent
• 20 years of age and older
• If a subject is a female of childbearing potential, she must utilize reliable contraceptive throughout the study, and must have a negative urine pregnancy test prior to enrollment into this study.

Exclusion Criteria:

• Females who are pregnant, nursing or planning a pregnancy, or females of childbearing potential who are not using a reliable method of contraception.
• Presence of any abnormality or significant illness that could be expected to interfere with the study.