Table 1.

Screening and annual postoperative mean C:D ratio, visual field, and central corneal thickness, available eyes at each visit

Ocular parameter	Screening, N=39	Month 12, N=39	Month 24, N=38	Month 36, N=37
C:D ratio, mean (SD)	0.7 (0.1)	0.7 (0.1)	0.7 (0.1)	0.7 (0.1)
VF–mean deviation (dB), mean (SD)	−6.4 (6.9)	−5.9 (7.1)	−5.2 (7.1)	−5.2 (6.8)
VF–pattern SD (dB), mean (SD)	3.0 (1.9)	2.1 (2.5)	3.1 (2.5)	2.5 (2.3)
Corneal thickness (µm), mean (SD)	540.9 (40.3)	541.1 (41.1)	543.3 (40.3)	543.3 (40.9)

Abbreviations: C:D, cup:disc; SD, standard deviation; VF, visual field.