ArticleBMC ophthalmology2025
Clinical and spectral-domain optical coherence tomography findings and changes in new-onset macular edema after silicone oil tamponade.
Article in BMC ophthalmology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- Comparison of the effect of gas and silicone oil tamponades on visual outcomes in the surgical treatment of rhegmatogenous retinal detachment.International journal of retina and vitreous · 2026Article
- Current Topics in OCT Applications in Vitreoretinal Surgery.Bioengineering (Basel, Switzerland) · 2025Review
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Abstract
backgroudFew investigations have been conducted on the detailed clinical features of CME associated with SiO, from emergence to restoration, especially using OCT images. This study aimed to analyze the clinical and spectral-domain optical coherence tomography (SD-OCT) characteristics and changes in cystoid macular edema (CME) associated with silicone oil (SiO).
methodsRetrospective case series. Six cases of newly on-set CME after SiO tamponade were examined. SD-OCT was performed before pars plana vitrectomy, after SiO tamponade, and after SiO removal. Clinical and SD-OCT data was collected.
resultsCME was first noted at 28.83 ± 9.22 days after SiO tamponade. The average foveal thickness was 411 ± 41 μm before oil removal and decreased to 267 ± 69 μm three days after oil removal (P = 0.028). The average visual acuity before and after oil removal were 0.82 ± 0.40 logarithm of the minimum angle of resolution (logMAR) and 0.75 ± 0.45 logMAR, respectively, and the difference was not statistically significant (P = 0.285). SD-OCT revealed that three patients had edema first in the inner nuclear layer (INL), and three had cysts in both INL and outer nuclear layers (ONL) at discovery. Of the six patients, three exhibited cystic changes in the fovea firstly. CME showed rapid recovery following SiO removal, with cysts completely disappearing in four patients (66.7%) within 3 days. However, in two patients (33.3%), the cysts persisted in INL after three days, whereas the cysts in ONL had resolved completely. The ellipsoid zone integrity of the macular region was smoother in patient with better vision.
conclusionNew-onset CME after SiO tamponade may initially affects INL and then ONL. CME shows significant improvement after oil removal, probably initially resolving in ONL, and then followed by INL. SD-OCT enabless monitoring of macular microstructure changes in SiO-treated eyes, and macular cysts' occurrence can indicate the oil removal need.
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