[Association between watershed zone and visual field defect in normal tension glaucoma].
In order to evaluate the association between the watershed zone and glaucomatous optic damage, we performed indocyanine green fluorescence angiography with a scanning laser ophthalmoscope in 54 eyes of 27 patients with normal tension glaucoma. The visual field indices were measured with a Humphrey Field Analyzer. We identified 8 eyes (14.8%) of 7 patients with a watershed zone not including the optic nerve head (type I), 32 eyes (59.3%) of 20 patients with the zone partially including the optic nerve head (type II), and 14 eyes (26.0%) of 10 patients with the zone including the optic nerve head (type III). Of the total of 27 patients, 10 patients (37.0%) had different types in each eye. In these patients, the mean deviation (MD) of visual field indices was worse in the eye with the watershed zone which included a larger part of the optic disc than in the contralateral eye (p < 0.05). Conversely, the eye with worse MD than the contralateral eye had a watershed zone which included a larger part of the optic disc than the other eye (p < 0.05). The location of watershed zone appeared to influence the progression of the visual field defect.
Sato
Y
Y
Department of Ophthalmology, Gifu University School of Medicine, Japan.
Tomita
G
G
Onda
E
E
Goto
Y
Y
Oguri
A
A
Kitazawa
Y
Y
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002829:Choroid / Q000473:pathology; D018450:Disease Progression; D005260:Female; D005451:Fluorescein Angiography; D005901:Glaucoma / Q000503:physiopathology*; D006801:Humans; D007208:Indocyanine Green; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D009887:Ophthalmoscopy; D009898:Optic Disk / Q000473:pathology; D014786:Vision Disorders / Q000209:etiology; D014794:Visual Fields
D007208:Indocyanine Green