View clinical trials related to Vitreous Detachment.
Filter by:Post-operative infectious endophthalmitis is devastating condition that causes a diffuse intraocular inflammation and may lead to blindness. Acute post-operative endophthalmitis usually presented within 6 weeks of intraocular procedure and diagnosis is confirmed by clinical examination and by the aid of B-scan ultrasonography.
This study was an experimental, single-blinded, randomized controlled trial that aimed to compare recovery time between TCI propofol and sevoflurane. After ethical approval from Research Ethical Committee Faculty of Medicine, Universitas Indonesia (879/UN2.F1/ETIK/2017) and informed consent, patients aged 18-65 years old, body mass index 18 - 30 kg/m2, American Society of Anesthesiologists (ASA) status I-II who were scheduled for vitrectomy surgery under general anesthesia, at Kirana's Eye Operating Theatre Cipto Mangunkusumo National Referral Hospital from September until December 2017, were recruited in this study. All subjects would be recruited with a consecutive sampling method and randomly assigned into two groups, the TCI propofol group and sevoflurane group. Block random allocation was done for all subjects by using the random allocator program Winpepi.
Intraocular surgery could induce vitreous degeneration and then abnormal posterior vitreous detachment (PVD) could occur including vitreoschisis and partial-thickness PVD. Vitreomacular interface (VMI) abnormalities such as epimacular membrane were observed following many intraocular surgeries. The incidence of peripheral break and epimacular membrane (EMM) after pneumatic retinopexy were 11.7% and 4-11%, respectively. Although multiple intravitreal anti-vascular endothelial growth factor (anti-VEGF) injections induced PVD of 5.6%, but peripheral break was reported as only 0.67%. The incidence of rhegmatogenous retinal detachment (RRD) after phacoemulsification is gradually increased with time. The accumulative risk of RRD was increased from 0.27% at 1 year to 1.27% at 20 years after phacoemulsification.
Intraocular surgery could induce vitreous degeneration and posterior vitreous detachment (PVD). Vitreomacular interface (VMI) abnormalities usually are caused by abnormal PVD, vitreoschisis and partial-thickness PVD. Furthermore, the PVD could induce the peripheral break. The incidence of peripheral break and epimacular membrane (EMM) after pneumatic retinopexy were 11.7% and 4-11%, respectively. Although multiple intravitreal anti-vascular endothelial growth factor (anti-VEGF) injections induced PVD of 5.6%, but peripheral break was reported as only 0.67%. The most common intraocular surgery is cataract surgery. From the literature review, many methods were used to detect the PVD after phacoemulsification. The former studies used indirect ophthalmoscopy and ocular ultrasound for diagnosis of PVD. The later studies used the optical coherence tomography (OCT) for PVD detection. The OCT device had higher effectiveness in evaluation of the posterior segment, then it can detect post-phacoemulsification PVD more and early than previous studies. Ivastinovic et al demonstrated 59.2% of patients had PVD at 1 month after phacoemulsification, and increased up to 71.4% at 3 months. The incidence of rhegmatogenous retinal detachment (RRD) after phacoemulsification is gradually increased with time. The accumulative risk of RRD was increased from 0.27% at 1 year to 1.27% at 20 years after phacoemulsification.
Posterior vitreous detachment is a common event. With optical coherence tomography, the investigators can precisely follow the stage of posterior vitrous detachment. In this study, the investigators investigate if the loss of contact between the vitreous and the fovea is the start of glaucoma progression.
The purpose of this study is to compare the efficacy of oral sedation to intravenous sedation with anesthesiology support and monitoring.
Vitreous fluid, containing 95% water, fills the space behind the lens. Its gelatinous consistency is due to the presence of hyaluronic acid, mucopolysaccharide and collagen fibers. With age, the collagen aggregates into parallel bundles, bound by cross links, leaving the pockets of liquid in the glass body. This redistribution is referred to as syneresis, which is found in 90% older than 40 years. After liquefaction, the vitreous enters the retroviral space and separates the posterior hyaloid membrane from the retina. When separating from the optical disk it forms an annular formation (Weiss ring) in front of the optical disc. These agglomerated collagen bundles (opacities) disperse the photons of light and are perceived by the patients as a "gray silhouette-like artifact". Two major interventions for these symptoms include Nd: YAG laser vitreolysis and vitrectomy. The less invasive method Nd: YAG laser increases the temperature of the opacity thus vaporizing them to smaller fragments that are easier to sediment onto the bottom of the vitreous cavity thereby relieving the symptoms.
Phacoemulsification with implantation of posterior chamber lenses represents the gold standard of care for patients needing lens surgery, but there is an increased risk of developing pseudophakic retinal detachment after surgery. Especially myopic patients have an even higher risk of pseudophakic retinal detachment compared to the general population. The aim of this multicenter study is to document the presence and/or post-operative development of posterior vitreous detachment (PVD) and to assess its influence on the incidence of retinal detachment (RD) in myopes in a time period of three and five years after lens surgery. 618 eyes of patients scheduled for regular lens surgery will be included, defined by an axial length of 25.0 mm or more. To examine the vitreous status, all patients will receive a comprehensive eye examination pre-operatively, including funduscopy with assessment of a Weiss ring and optical coherence tomography (OCT). Patients will be divided into two groups, group A with pre-operative complete PVD and group B with no/partial PVD. Group A will be invited for one follow-up visit (two months post-operatively) followed up by telephone interviews at one, two, three and five years after surgery to determine occurrence of pseudophakic retinal detachment. Group B will be invited for follow -up examinations at two months, six months and one year after surgery to document occurrence of PVD (if a PVD is present at one of the follow-ups, no more visits are necessary). Two, three and five years after surgery, all patients from group B will be interviewed by telephone, as in group A, to document the occurrence of pseudophakic retinal detachment. In the recent literature the association between the occurrence of PVD pre-/post-operative and RD after lens surgery is well documented but not described for myopic patients. The results of this multicenter study should help to tackle the problem of RD prediction in myopic patients depending on their pre-operative vitreous status, especially in the setting of refractive lens exchange.
This is a single-center, prospective randomized controlled trial evaluating the safety and efficacy of YAG vitreolysis versus sham for symptomatic Weiss ring due to posterior vitreous detachment.
This study evaluates the association between surgery of the cataract and posterior vitreous detachment, in the emmetropic patient, by comparing eyes operated with eyes not operated in the same group of patients