Table 1. Inclusion Criteria.

Inclusion Criteria
·Subjects…	Were 30–80 years old.
	Had visual acuity better than 0.155 (BCVA, LogMAR).
	Had at least one eye with primary open angle glaucoma.
	Had no optic nerve head anomalies (approximately, 2.4< DM/DD <3).
	Had no other disease affecting the visual field.
	Had no conditions that might cause secondary glaucoma.
	Had undergone automated perimetry with the Humphrey Field Analyzer (SITA standard 30–2 or 24–2) in the six months before the test day.
	Had remaining visual fields of at least MD >−12dB in their most recent tests.
	Had been reliably tested with the Humphrey Field Analyzer (SITA standard 30–2) at least six times for more than three years (fixation loss <33%, false positive and false negative <20%).
	Had visual field defects corresponding to glaucomatous optic disc change.
	Had no history of intraocular surgery other than for glaucoma or cataracts.
	Had no history of surgery for the previous three years.
·If both eyes met the inclusion criteria, the eye with more advanced glaucoma was selected.

BCVA: best corrected visual acuity

DM/DD: disc-macula distance to disc diameter ratio

MD: mean deviation