Abstract
Purpose
To investigate the evolution of vitreomacular adhesion (VMA) to acute vitreofoveal separation with particular emphasis on cases involving the underlying fovea.
Methods
In this observational case series, of 192 cases in the VMA stage, 51 progressed to acute vitreofoveal separation; this subgroup was divided into those with normal separation (Group I) and those with co-existing macular findings (Group II). All patients were examined using spectral domain-optical coherence tomography (SD-OCT) at regular three-month intervals. We recorded the best-corrected visual acuity (BCVA), the vitreomacular angle of the VMA (nasally and temporally), the horizontal diameter of the VMA, the macular thickness, the integrity of the photoreceptor layer and of the external limiting membrane. The Amsler grid test was used in the intermediate examinations in cases where patients developed symptoms.
Results
Out of the 51 cases in the VMA stage, 45 (88.2%) progressed to normal spontaneous vitreofoveal separation, while six (11.8%) developed findings of the fovea, such as macular thinning (two cases), an anomalous foveal contour (two cases), a macular tissue defect (one case) and vitreous separation from only the temporal side of the VMA in one case. Foveal findings were the same during the follow-up period in all but one case in which improvement was noted. Differences in BCVA between baseline measurements, those made immediately after vitreofoveal separation, and those made during final examination were not statistically significant. For the whole sample of our study (51 cases), the mean observation time at the VMA stage was 21.8 ±10.6 months, while the mean follow-up time after vitreofoveal separation was 9.7 ±4.9 months. In cases that developed incidents from the fovea, the mean observation time from the baseline to the last examination before vitreofoveal separation was 16.5 ±11.2 months and the mean follow-up time from the diagnosis of vitreofoveal separation to the final examination was 8.5 ±4.4 months.
Conclusions
VMA, excepting its progression to vitreomacular traction or spontaneous release, in a subset of patients can also cause findings associated with the fovea, concomitantly with vitreofoveal separation. Vitreofoveal separation can induce unilateral anatomic distortion of the fovea accompanied by symptoms, such as metamorphopsia or micropsia.
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Theodossiadis, G.P., Chatziralli, I.P., Sergentanis, T.N. et al. Evolution of vitreomacular adhesion to acute vitreofoveal separation with special emphasis on a traction-induced foveal pathology. A prospective study of spectral-domain optical coherence tomography. Graefes Arch Clin Exp Ophthalmol 253, 1425–1435 (2015). https://doi.org/10.1007/s00417-014-2826-9
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DOI: https://doi.org/10.1007/s00417-014-2826-9