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Morphometric change analysis of the optic nerve head in unilateral disk hemorrhage cases
1Department of Ophthalmology, Seoul National University College of Medicine, Chongno-gu, South Korea.
Purpose:
To measure the changes in optic disk morphology after unilateral disk hemorrhage and to compare the changes between eyes.
Design:
Observational case series.
Methods:
Ten glaucoma patients who had a unilateral disk hemorrhage were enrolled. The baseline measurements obtained by Heidelberg Retina Tomograph (HRT) were performed on both eyes when a disk hemorrhage was detected, and the second measurements were done after an average of 32 +/- 19 months. The amount of change and the percent change in the HRT parameters from the baseline measurements of the hemorrhagic eyes were compared with those of the contralateral nonhemorrhagic eyes.
Results:
The reduction in the neuroretinal rim area and the decrease in volume were significantly greater in the octant with the disk hemorrhage than measured in the contralateral eyes (P =.002, Wilcoxon signed rank test).
Conclusions:
This study demonstrated quantitatively that the progression of optic disk damage in glaucoma is faster in eyes with disk hemorrhage than in eyes without disk hemorrhage.