Cases reported "Vitreous Detachment"

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1/6. diagnosis of vitreoretinal adhesions in macular disease with optical coherence tomography.

    PURPOSE: To compare the relative incidence of vitreoretinal adhesions associated with partial vitreous separation within the macula diagnosed with optical coherence tomography (OCT) with that of those diagnosed with biomicroscopy. methods: The authors obtained linear cross-sectional retinal images using OCT in patients with selected macular diseases. Additional studies included biomicroscopy, fundus photography, fluorescein angiography, and B-scan ultrasonography. RESULTS: Optical coherence tomography was performed on 132 eyes of 119 patients. Vitreoretinal adhesions within the macula were identified using OCT in 39 eyes (30%) with the following diagnoses: idiopathic epiretinal membrane (n = 13), diabetic retinopathy (n = 7), idiopathic macular hole (n = 7), cystoid macular edema (n = 7), and vitreomacular traction syndrome (n = 5). Biomicroscopy identified vitreoretinal adhesions in only 11 eyes (8%). Two distinct vitreoretinal adhesion patterns were identified with OCT, each associated with partial separation of the posterior hyaloid face: focal (n = 25) and multifocal (n = 14). CONCLUSIONS: Optical coherence tomography is more sensitive than biomicroscopy in identifying vitreoretinal adhesions associated with macular disease.
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keywords = epiretinal membrane, epiretinal, membrane
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2/6. Macular star associated with posterior hyaloid detachment.

    PURPOSE: To report a patient with a Leber's idiopathic stellate neuroretinitis-like lesion that was caused by vitreous traction accompanying a posterior hyaloid detachment. methods: We present a 49-year-old woman who showed segmental optic disc edema, peripapillary retinal detachment, and a macular star. RESULTS: An incomplete posterior hyaloid detachment was present, and the posterior hyaloid membrane was attached to the nasal margin of the optic disc. fluorescein angiography revealed a bent retinal artery on the upper margin of the optic disc, and leakage of fluorescein was observed from this area. CONCLUSION: Vascular damage to the optic disc due to vitreous traction should also be considered as a mechanism for the ophthalmoscopic appearance of the fundus when lesions suggestive of Leber's idiopathic stellate neuroretinitis are present in an adult.
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ranking = 0.0014027044204098
keywords = membrane
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3/6. vitrectomy for diabetic macular edema: the role of posterior vitreous detachment and epimacular membrane.

    PURPOSE: To evaluate the surgical efficacy of pars plana vitrectomy on eyes with diabetic macular edema in the presence or absence of a complete posterior vitreous detachment and with or without an epimacular membrane. methods: Pars plana vitrectomy was performed on 30 eyes of 29 cases with diabetic macular edema. visual acuity was measured, and retinal thickness was determined by optical coherence tomography before and after vitrectomy. To evaluate the relationship between the effects of vitrectomy and the presence or absence of posterior vitreous detachment and/or epimacular membrane, all eyes were placed into one of four groups: group A, eyes with posterior vitreous detachment and epimacular membrane; B, eyes with posterior vitreous detachment and without epimacular membrane; C, eyes without posterior vitreous detachment and with epimacular membrane; and D, eyes without posterior vitreous detachment and without epimacular membrane. The expression of vascular endothelial growth factor and interleukin-6 was investigated immunohistochemically in epimacular membrane specimens obtained from seven eyes with diffuse diabetic macular edema. RESULTS: The postoperative mean visual acuity (0.653 /- 0.350: mean /- SD logarithm of minimal angle of resolution [logMAR]) was significantly better than the mean preoperative visual acuity (0.891 /- 0.319 logMAR; Wilcoxon signed-rank test, P =.0007). The postoperative foveal thickness (264.5 /- 118.6 microm) was significantly thinner than the preoperative foveal thickness (477.8 /- 147.7 microm; Wilcoxon signed-rank test, P <.0001). There were no significant differences in the improvement of visual acuity and decrease of foveal thickness between the four groups (Kruskal-Wallis test, P =.13, P =.65, respectively). All of the epimacular membranes obtained at surgery expressed vascular endothelial growth factor and interleukin-6. CONCLUSIONS: These results demonstrated that vitrectomy with removal of epimacular membrane is generally an effective procedure in reducing diabetic macular edema, and the outcome does not depend on the presence absence of posterior vitreous detachment and epimacular membrane.
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ranking = 0.019637861885737
keywords = membrane
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4/6. A case of Coats' disease with a peeling of premacular fibrosis after photocoagulation.

    We report a 26-year-old man with Coats' disease associated with premacular fibrosis. As an initial treatment, the peripheral exduative area was treated with argon laser photocoagulation. Six weeks later, the premacular fibrosis was peeled off and the posterior vitreous membrane was also detached. The patient's visual acuity improved to 20/20. We also observed a change of the vitreous component before and after the treatment that was similar to posterior vitreous detachment (PVD). This is the first reported case in which a distinct vitreous change was observed after premacular fibrosis peeling in Coat's disease.
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ranking = 0.0014027044204098
keywords = membrane
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5/6. Ultrastructure of vitreomacular traction syndrome associated with persistent hyaloid artery.

    AIM: To demonstrate the ultrastructure of vitreomacular traction associated with persistent hyaloid artery. methods: Pars plana vitrectomy was performed in a 66-year-old man with progressive vitreomacular traction associated with a persistent hyaloid artery. Epimacular tissue was peeled and processed for transmission electron microscopy. RESULTS: Ultrastructural analysis revealed multiple sheets of cellular and collagenous components. myofibroblasts and newly formed collagen were the predominant features. Fibrous astrocytes, fibroblasts, macrophages, and basement membrane were also present. CONCLUSION: The cellular composition of the epimacular tissue and high cellular activity suggest that persistence of the hyaloid artery may contribute to the development of vitreomacular traction.
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ranking = 0.0014027044204098
keywords = membrane
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6/6. Posterior vitreous detachment and macular hole formation in myopic foveoschisis.

    PURPOSE: To report two cases of macular hole (MH) associated with myopic foveoschisis (MF). DESIGN: Interventional case report. methods: Two women presented with metamorphopsia. Preoperative optical coherence tomography (OCT) showed an MH and MF. We performed vitrectomy, internal limiting membrane (ILM) peeling and gas tamponade. RESULTS: Preoperative OCT examination and intraoperative microscopic observation revealed partial posterior vitreous detachment (PVD) at the posterior retina and vitreous strands adhering to the edge of the MHs. The MF resolved in both patients, but the MHs remained open postoperatively. CONCLUSIONS: Although the contribution of tangential traction cannot be excluded, the mechanism of MH formation in eyes with MF may be anteroposterior traction via abnormal vitreofoveal adhesion resulting from partial PVD.
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ranking = 0.0014027044204098
keywords = membrane
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