Two kinds of forces are active in vitreoretinal traction diseases: tangential and anterior-posterior forces. However, tangential forces are less characterized and classified in literature compared to the anterior-posterior ones. Tangential epiretinal forces are mainly due to anomalous posterior vitreous detachment (PVD), vitreoschisis, vitreopapillary adhesion (VPA), and epiretinal membranes (E...

Macular hole (MA) is a significant cause of visual acuity (VA) loss in patients over 50 years in our environment. The traction by the vitreous, particularly the posterior hyaloids, on the retina surface plays a leading role in the etiopathogeny of MA. The collagen fibers that comprise the posterior vitreous are firmly joined to the macula and connecting to the internal limiting membrane by mean...

OBJECTIVE To promote understanding of the development of posterior vitreous detachment (PVD) in healthy eyes using optical coherence tomography (OCT). METHODS We studied 209 eyes of 209 healthy volunteers (165 men and 44 women; mean age, 52.3 years [range, 31-74 years]). In addition to biomicroscopy and ophthalmoscopy, OCT was performed to obtain high-resolution cross-sectional images of the ...

PURPOSE To compare the state of the posterior vitreous in exudative age-related macular degeneration (AMD) with eyes with nonexudative AMD and controls. DESIGN Prospective, observational case series. METHODS B-scan ultrasonography and optical coherence tomography (OCT) were performed in 163 eyes from 82 subjects older than 55 years, 50 eyes with exudative AMD, 57 with nonexudative AMD, and ...

Purpose: To describe a case of spontaneous closure macular microhole induced by an acute posterior vitreous detachment (PVD). Methods: Retrospective report and analysis patient data. Case Report: We present (PVD) microhole. In our patient, developed few weeks after PVD. The development hole secondarily to PVD is rare, there are reports closure. Reporting this important alert clinicians the pote...

BACKGROUND Foveal detachment associated with foveoschisis usually takes a progressive course, and is associated with a poor visual outcome. The purpose of this study was to report the spontaneous resolution of foveal detachment in patients with myopic traction maculopathy without posterior vitreous detachment. METHODS A retrospective study involving eight cases of high myopia with foveoschisi...

PURPOSE The aim of this study was to evaluate the relationship between oxidative stress and human vitreous degeneration, using the presence of an evident posterior vitreous detachment (PVD) as a clinical sign and thiobarbituric acid-reactive substances (TBARS) and nitrite as oxidative biomarkers. METHODS We collected 42 vitreous samples from patients undergoing pars plana vitrectomy for two g...

We report the possible mechanism of development of cystoid macular edema (CME) in retinitis pigmentosa (RP) in the case of a 68-year-old woman with RP and CME in the right eye and resolving CME in the left eye. Spectral domain optical coherence tomography showed CME and posterior vitreoschisis in the nasal quadrant of the fundus without a posterior vitreous detachment (PVD). This vitreous patho...

PURPOSE To determine if oral anticoagulation alters the association between vitreous hemorrhage (VH) and retinal tears in eyes with acute, posterior vitreous detachment (PVD). METHODS In this retrospective chart review, the complete records of consecutive patients with spontaneous, symptomatic acute PVD from a single referral-based practice were reviewed. The use of oral anticoagulants, the p...