Aim: to investigate the role of heterogeneous fibroblasts in the development of epiretinal membrane in eyes with modeled proliferative vitreoretinopathy.
Material And Methods: The material for investigation were 6 eyes of 3 Chinchilla rabbits. Suspended fibroblasts (fibroblasts of the human skin - 200000 cells in 0.1 ml) were injected into the vitreous cavity via the pars plana. The animals were followed up for 1 month and then made out of the experiment. The eyes were enucleated and fixed in 10% neutral buffered formalin for routine histological examination. Microscopy was performed on the Leica system.
Results: The main clinical and morphological criteria for a rabbit model of PVR induced by intravitreal injection of heterogenic fibroblasts have been established: epiretinal membrane formation, changes in intraocular structures (the retinal pigment epithelium and retina), and inflammation (due to transplantation immunity). Particularities of the epiretinal membrane development and the role of different intraocular structures have been described.
Conclusion: The experimental fibroblastic model of PVR reproduces the final, fibrous, stage of PVR, which is significant for efficacy evaluation of antiproliferative drugs.
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http://dx.doi.org/10.17116/oftalma201713354-10 | DOI Listing |
J Vitreoretin Dis
December 2024
Retinology Institute, Melbourne, Australia.
To compare the postoperative outcomes after combined phacovitrectomy for epiretinal membrane and cataract (combined group) vs standalone phacoemulsification (control group). A systematic literature search of Ovid MEDLINE, CINAHL, and the Cochrane Library was performed. The primary outcomes were the refractive predictive error and mean absolute error expressed as the spherical equivalent.
View Article and Find Full Text PDFRetin Cases Brief Rep
October 2024
Department of Ophthalmology, Mayo Clinic, Rochester, MN, 55901.
Purpose: We describe a case of non-traumatic macular hole in a pediatric patient associated with numerous epiretinal lesions throughout the macula.
Methods: A healthy 9-year-old girl presented to retina clinic with several months of blurry vision in the right eye. Clinically, there was a full-thickness macular hole with serous detachment and white epiretinal tufts.
Retina
October 2024
Tianjin Key Laboratory of Retinal Functions and Diseases, Tianjin Branch of National Clinical Research Center for Ocular Disease, Eye Institute and School of Optometry, Tianjin Medical University Eye Hospital, Tianjin 384300, China.
Purpose: To describe a novel surgical approach for treating patients diagnosed with severe idiopathic epiretinal membranes (iERM) featuring ectopic intrafoveal layers (EIFL).
Method: A retrospective, interventional case series was conducted involving eight cases of iERM with EIFL. The technique involved a 27-gauge vitrectomy, removal of all vitreous adhesions, and injection of approximately 100μl sub-retinal balanced salt solution (BSS) using a 41-gauge subretinal needle, creating 3-4 localized bleb-like elevations around the folded retina to loosen it.
Indian J Ophthalmol
January 2025
Department of Retina and Vitreous, University of Pittsburgh School of Medicine, Medical Retina and Vitreoretinal Surgery, Pittsburg, PA, USA.
Purpose: To evaluate various supervised machine learning (ML) statistical models to predict anatomical outcomes after macular hole (MH) surgery using preoperative optical coherence tomography (OCT) features.
Methods: This retrospective study analyzed OCT data from idiopathic MH eyes at baseline and at 1-month post-surgery. The dataset was split 80:20 between training and testing.
Stem Cell Res Ther
December 2024
Department of Ophthalmology and Visual Science, Nagoya City University Graduate School of Medical Sciences, Nagoya, 467-8601, Japan.
Background: Mesenchymal stem cells may have neuroprotective and tissue regenerative capabilities and the potential to rescue retinal degeneration in chorioretinal diseases including myopic chorioretinal atrophy. Transplantation of human (allogeneic) adipose tissue-derived mesenchymal stem cell (adMSC) suspensions has been clinically conducted to treat retinal degenerative diseases. However, serious side effects including proliferative vitreoretinopathy and epiretinal membrane formation have been reported.
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