Optic disc topography and peripapillary retinal nerve fiber layer thickness in nonarteritic ischemic optic neuropathy and open-angle glaucoma.
OBJECTIVE
To evaluate the results of scanning laser tomography and scanning laser polarimetry (SLP) and the correlations with visual field damage (VFD) in eyes with nonarteritic ischemic optic neuropathy (n-AION) compared with eyes with open-angle glaucoma (OAG).


METHODS
Cross-sectional study.


METHODS
Thirty-three eyes of 33 patients with n-AION and 33 eyes with OAG whose age and VFD evaluated with the Humphrey field analyzer were matched to those of the n-AION eyes.


METHODS
The parameters of optic disc topography obtained with the Heidelberg Retina Tomograph II (HRT II) and retinal nerve fiber layer (RNFL) thickness with GDx with variable corneal compensation and the correlation to VFD.


RESULTS
The cup area, cup-to-disc area ratio, and mean cup depth were significantly smaller, and the cup shape measure more negative, in the n-AION eyes than in the OAG eyes (P<0.001), whereas rim area was significantly greater (P<0.001). Multivariate analyses showed that none of disc area, rim area, and mean cup depth in the n-AION eyes and only rim area (P = 0.029) in the OAG eyes was significantly associated with mean deviation (MD). Ellipse average of RNFL thickness significantly correlated with MD in the n-AION eyes (P = 0.045) and in the OAG eyes (P = 0.022).


CONCLUSIONS
Disc topography of eyes with n-AION was quantitatively characterized by small and shallow cupping and a relatively large rim area compared to eyes with OAG matched for age and VFD. In eyes with n-AION, significant correlation with VFD was found only for the RNFL thickness evaluated with SLP but not for the HRT II parameters.
Saito
Hitomi
H
Department of Ophthalmology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.
Tomidokoro
Atsuo
A
Sugimoto
Eiichiro
E
Aihara
Makoto
M
Tomita
Goji
G
Fujie
Kazutaka
K
Wakakura
Masato
M
Araie
Makoto
M
D000368:Aged; D003430:Cross-Sectional Studies; D003941:Diagnostic Techniques, Ophthalmological / Q000592:standards*; D005260:Female; D005902:Glaucoma, Open-Angle / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology; D006801:Humans; D007834:Lasers / Q000592:standards; D008297:Male; D008875:Middle Aged; D009412:Nerve Fibers / Q000473:pathology*; D009898:Optic Disk / Q000473:pathology*; D018917:Optic Neuropathy, Ischemic / Q000175:diagnosis* / Q000473:pathology / Q000503:physiopathology; D012160:Retina / Q000473:pathology*; D041622:Tomography, Optical / Q000592:standards; D014794:Visual Fields