Brief report
Optical coherence tomographic findings of dissociated optic nerve fiber layer appearance

https://doi.org/10.1016/j.ajo.2004.01.052Get rights and content

Abstract

Purpose

To examine the features of optical coherence tomographic (OCT) findings of dissociated optic nerve fiber layer (DONFL) appearance.

Design

Case–control study.

Methods

Twenty-four eyes undergoing vitrectomy for idiopathic epiretinal membrane or macular hole were examined postoperatively using OCT.

Results

Thirteen of the 24 eyes exhibited the DONFL appearance. In these 13 eyes, the OCT images indicated dimples in the retinal nerve fiber layer (RNFL) corresponding to each stria. The RNFL thickness (mean ± SD) at the dimple site was 38.1 ± 9.3 μm. The depth of each dimple was 28.6 ± 8.0 μm. The depths of all the dimples were limited to the RNFL thickness. In the other 11 eyes without the DONFL appearance, OCT images showed no distinct dimples.

Conclusions

The DONFL appearance is caused by dimples the depths of which are limited to the RNFL thickness.

References (5)

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    Moreover, the dramatic reduction in the number of eyes with microscotoma and scotoma after surgery is unlikely to be caused by lens removal. Consistent with most previous studies, this study did not find any correlation between the DONFL appearance and retinal sensitivity.31–33 Besides, there was no difference between the 2 techniques regarding overall, temporal, and nasal MRS; MRS changes; and the presence of absolute scotomas or microscotomas after surgery.

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