PURPOSE: To clarify the origin of the coexisting fluid in an optic disc pit case by
using optical coherence tomography (OCT). METHODS: High resolution OCT (Cirrus prototype,
Carl Zeiss Meditec) was used for image acquisition;three dimensional segmentation
was performed using Food and Drug Administration-approved imaging software (3D-Doctor
V4.0, Able software Corp., Lexington, MA) to demonstrate the structural changes of
the optic nerve head and the retina. RESULTS: Using high resolution OCT, the authors
demonstrated that this case of optic pit had a possible connection between the subretinal
and the intraretinal space. CONCLUSIONS: The authors assume that the intraretinal
space is progressively filled with subarachnoidal fluid, leading to a tearing force
within the outer neurosensory layers. A connection between the outer nuclear layer
and the subretinal space may lead to a serous retinal detachment as a secondary event.
Vision loss could consecutively be induced by a serous retinal detachment. High resolution
OCT technology is able to visualize discrete changes of the microarchitecture of the
optic nerve as well as the retina when combined with appropriate imaging software.