Abstract:
PURPOSE:To identify the differences in posterior pole profiles between early normal tension glaucoma (NTG) patients with an initial central visual field (VF) loss and those with a peripheral VF loss. METHODS:Normal tension glaucoma patients with parafoveal scotoma (PFS; within a central 10° of fixation; superior, n=47; inferior, n=24) and peripheral nasal step (PNS; VF defect in the nasal meridian outside 10° of fixation; superior, n=27; inferior, n=32) in either hemifield were enrolled, if their mean deviation was greater than -10 decibels (dB). Disc tilt (tilt ratio), disc torsion, area of peripapillary atrophy and disc-foveal angle (angle between a horizontal line through the disc centre and the line connecting the fovea and the disc centre) were analysed from red-free fundus photographs. RESULTS:The mean disc-foveal angles (shortest diameter) in PNS and PFS groups were 6.2±4.5 and 7.7±4.0°, respectively. In multivariate analysis, eyes with PFS were associated with a greater disc-foveal angle, compared with PNS (p=0.042). In subgroup analysis, superior PFS group showed greater disc-foveal angle compared with inferior PFS group (p=0.018). In the PNS group, the direction of disc torsion was associated with superior and inferior hemifield defects (p=0.004). CONCLUSIONS:The posterior pole profiles were different in NTG patients according to their location of damage. Disc-foveal angle was the major determinant of the VF location in patients with VF loss at the central region and disc torsion in patients with loss at the peripheral region.
journal_name
Acta Ophthalmoljournal_title
Acta ophthalmologicaauthors
Choi JA,Park HY,Park CKdoi
10.1111/aos.12492subject
Has Abstractpub_date
2015-03-01 00:00:00pages
e94-9issue
2eissn
1755-375Xissn
1755-3768journal_volume
93pub_type
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更新日期:2012-12-01 00:00:00
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