View clinical trials related to Macular Hole.
Filter by:This prospective randomised controlled trial will be conducted to investigate that increasing the vitrectomy cutting rate from 10,000 cut/min to 20,000 cut/min will result more efficiency and shorter core vitrectomy time, and it is equally safe as compared to the current 10,000 cut/min. We plan to target the patients undergoing for vitrectomy for common vitreoretinal pathology. Our plan is to conduct a randomised study with 2 arms, one with the higher cutting rate (20,000 cut/min) versus a second arm using the existing system 10,000 cuts/min.
ILM-flap (internal limiting Membrane-flap) transposition is a new surgical option in repair of macular holes, therefore one year outcomes are needed to better evaluate that method.
Epiretinal membranes (ERM) are disorders leading to vision loss and metamorphopsia. Vitrectomy with membrane peeling has developed to be the gold-standard in treatment of ERM. ERM can be well visualized with spectral domain optical coherence tomography (SD-OCT). The aim of the study is to examine ERM and internal limiting membranes (ILM) exzised during routine macular surgery with fourier transformed infrared spectroscopy (FTIR) and compare results to optic coherence tomography (OCT) findings.
To compare the morphologic and functional outcomes of internal limiting membrane peeling-reposition versus peeling in idiopathic macular holes
The purpose of this study is to determine the effects of two different internal limiting membrane (ILM) peeling area on anatomical closure outcomes after macular hole surgery measured by optical coherence tomography (OCT).
Our research group tested the toxicity of different dye concentrations extracted from the acai fruit using a rabbit model. The dye extracted from the acai fruit in concentrations of 10% and 25% was found to be safe for vitreoretinal surgery. This initial research represented the landmark research for testing this alternative vital dye in a clinical research in humans. The aim of the present clinical trial in humans will be to test the applicability of the acai dye in the identification of the posterior hyaloid and ILM during vitreoretinal surgery in humans.
Funds autofluorescence (FAF) indicates hyper fluorescence at the macular hole in the patients with macular hole. Investigators investigate the association between FAF and visual acuity, recovery of foveal microstructure, and FAF in surgically closed macular holes.
Optical coherence tomography (OCT )provides high resolution information regarding the anatomic structure of the tissues of the eye in a cross-sectional and 3 dimensional view. Much of this information is not able to be visualized by a clinician. Utilizing this information during surgery will allow for the ophthalmic surgeons to better understand how surgical procedures impact the anatomic structure of the eye. In this study an OCT device that has been built into the microscope (rather than mounted on the side or held in the surgeon's hand) and will be utilized to take images at various milestones during surgery to assess feasibility and potential utility of this technology. Since it is built into the microscope, there are potential significant advantages over a separate system including increased efficiency, improved working distance, and the ability to visualize tissue-instrument interactions.
OCT provides high-resolution information regarding the anatomic structure of the tissues of the eye in a 2-dimensional and 3-dimensional view. Much of this information is not able to be recognized by a clinician. Utilizing this information during surgery will allow for ophthalmic surgeons to better understand how surgical procedures impact the anatomic structure of the eye.
The macular hole formation takes place in the centre of the retina. A closure of the macular hole is believed to take place if the central retinal area is kept dry in the postoperative period. Therefore the eye is filled with a gas mix and the patients are urged to avoid the supine position in the first postoperative days. The investigators have developed a positioning measuring device which can measure the extent of supine positioning time. Patients are to carry the positioning measuring device during the first postoperative 24 hours. Hereby the investigators search new knowledge concerning patients compliance and its relation to macular hole closure.