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Showing 1-15 of 15 trials
NCT07255859
Age-Macular Degeneration (AMD) is a common eye condition and a leading cause of vision loss among people age 50 and older. It causes damage to the macula, a small area near the centre of the retina needed for sharp, central vision. It is estimated that the prevalence of early and late AMD in Asian populations aged 40 to 79 were 6.8% and 0.56% respectively. Prevalence in white populations estimated from large population studies were 8.8% and 0.59% respectively. With the aging population and people living longer, these numbers will only increase. Hence, this study aims to develop a system to evaluate OCCUTRACK's CRYSTALSIGHT device through remote monitoring for disease recurrence of wet aged-related macular degeneration using eye gaze tracking.
NCT07255885
The development of a next-generation 'CRYSTALSIGHT' solution using combinations of a novel and cost-effective eye-tracking system with artificial intelligence-based eye-tracking algorithms that detect macular abnormalities and enable clinicians to review and monitor the prognosis of patients via a web platform through the following deliverables. 1. Evaluate and improve a home-monitoring regimen involving the self-tests of the CRYSTALSIGHT gaze-tracking system 2. To demonstrate that CRYSTALSIGHT has the same or superior gaze-tracking capacities as Tobii. 3. Evaluate the CRYSTALSIGHT device for its functionality and ease of use as a qualitative measurement tool for patients. 4. Develop the Design History File (DHF) for regulatory filing requirements. 2\. This study will improve on the existing gaze-based scoring methodology for disease activity monitoring over time (delta-change) by quantitatively measuring saccadic speed, pursuit and micro-saccades.
NCT05179460
The purpose of this study is to evaluate incidence and prevalence rates of the study endpoints (pigmentary maculopathy \[PM\]/ pigmentary retinopathy \[PR\]/Any, PM/PR/ pentosan polysulfate sodium \[PPS\], and PM/PR/Non-PPS) in relation to PPS exposure, and in participants with interstitial cystitis (IC) but not exposed to PPS; changes in visual acuity (VA) over time; participant treatment journey leading to PPS treatment, and potential risk factors associated with the occurrence of PM/PR/PPS.
NCT05547789
Investigators aimed to assess the macular changes with OCT after uncomplicated phacoemulsification surgery in diabetic patients with non proliferative diabetic retinopathy (NPDR) at the time of surgery and the effect of perioperative and postoperative topical NSAIDS on macular changes .
NCT00473642
In this pilot study the researchers will evaluate the safety and efficacy of 50% reduced fluence PDT combination therapy with ranibizumab. The researchers hope to gain information regarding the use of reduced fluence PDT combination therapy. The information gained from this pilot study may prompt further definitive studies comparing the safety and efficacy of both standard fluence PDT combination therapy, reduced fluence PDT combination therapy, and ranibizumab monotherapy. The study will compare the use of combination therapy with ranibizumab and verteporfin PDT to ranibizumab alone in patients with exudative age-related macular degeneration (AMD). All patients will receive three consecutive monthly treatments with ranibizumab. Patients will be randomized 1:1:1 to 3 groups. Patients randomized to group 1 will receive only ranibizumab. Patients randomized to group 2 will also receive one treatment with reduced fluence (50% fluence) verteporfin PDT at day 0. Patients randomized to group 3 will also receive one treatment with standard fluence verteporfin PDT. All patients will also be evaluated for possible retreatment with ranibizumab and verteporfin PDT according to established criteria. Thirty patients will be recruited from one U.S. sites. Randomization will occur at the time of entry into the study. Follow-up will continue until month 12 (from day 0) in all subjects.
NCT03246152
Anti-vascular endothelial growth factor (VEGF) drugs are the mainstay of therapy for diabetic macular edema (DME), substantially improving visual acuity for many diabetics worldwide, and proving effective for treatment of both non-proliferative and proliferative diabetic retinopathy. Many studies such as Diabetic Retinopathy Clinical Research Network studies, RESTORE Study, and The BOLT Study have supported the use of different anti-VEGF agents in the treatment of DME with better visual outcomes using anti-VEGF injections alone or in combination with other treatments. Several ocular complications of intravitreal anti-VEGF injections have been reported including endophthalmitis, cataract and retinal detachment. The effect of anti-VEGF drugs on macular perfusion has been inconclusive, with mixed reports of increase, decrease or no effect on perfusion in response to anti-VEGF treatment. In many of these studies, however, patients with more ischaemic retinas were not included. Retinal ischemia is an important factor in the progression and prognosis of diabetic retinopathy. Fluorescein angiography (FA) was the method used to assess changes in macular perfusion after anti-VEGF injections in most of the studies. Despite its clinical usefulness, however, FA is known to have documented risks. Optical coherence tomography angiography (OCTA) is a new noninvasive method of acquiring high-resolution images of the retinal vasculature that can be utilized in the treatment of retinal disease without the need for dye injection. It allows the visualization of the superficial and deep retinal capillary layers separately and the construction of microvascular flow maps. Several studies have proved the reliability of OCTA in detecting and quantifying macular ischemia in diabetics. In this study, investigators aim to evaluate the effect of repeated intravitreal injections of different Anti-VEGF agents on the perfusion of different capillary layers in the macula of diabetic patients using OCTA.
NCT03902925
Vitreoretinal surgery has evolved to less invasive procedures, and it is used to treat a wide range of diseases. So anesthesia for vitreoretinal procedures has evolved, promoting adequate analgesia while reducing risks to the patient. In the present study two types of procedures for anesthesia during vitreoretinal surgery are evaluated regarding the pain referred by the patient during the whole procedure: peribulbar anesthesia versus sub-tenon injection plus topical jelly anesthesia. Through the comparative analysis of the pain scale of the two groups it is expected that the two modalities present the same anesthetic efficacy, showing that the methods used may be equivalent.
NCT02805686
The maculopathy induced by the retinal toxicity of the synthetic antimalarials must be detected at the infra-clinical state, when it can still be reversible. Identifying early retinal anatomical changes has always represented (a challenge for medical interns, dermatologists, rheumatologists, and ophthalmologists). Currently, the gold-standard for its screening and its diagnostic is the multifocal electroretinogram (mfERG), however it is a long and tedious exam, offered by only few medical centers. It is recommended to find a simple non-invasive alternative, on a commonly used equipment. The study of the ellipsoid (junction line between, the external and internal photoreceptor segments) using optical coherence tomography (OCT-SD) "en face" enables us, to obtain a panoramic viewing of the state of the photoreceptor layer, and to detect any modification, even subtle, within this layer. The OCT-SD "en face" can be easily done by any ophthalmologist who owns one. The proportion of "en face" OCT-SD showing suggestive retinal damage and patients who present retinal damage in relation with synthetic antimalarial treatments and diagnosed by mfERG is considered in this study.
NCT03185936
To evaluate the anatomical and functional results of pars plana vitrectomy (PPV) combined with internal limiting membrane (ILM) peeling, endolaser photocoagulation and gas tamponade in management of optic disc pit (ODP) maculopathy.
NCT01273727
An epiretinal membrane is scar tissue on the retina that can cause blurring and distortion of vision and lead to swelling, or macular edema. Despite surgery to remove the scar tissue(membrane peeling), residual swelling of the retina may continue to interfere with vision. In this study the investigators will inject an implantable steroid device into the back, fluid-filled portion of the eye. Steroids have been found to decrease the swelling in the retina. Ozurdex™ is an implantable steroid. Once implanted, Ozurdex™ is slowly dissolved by the vitreous gel that fills the eye, releasing the steroid. The steroid drug delivery system in this study, known as Ozurdex™ has been FDA-approved by the US Food and Drug Administration (FDA) for decreasing swelling due to another condition in the eye. This study will help to find out whether or not this device Ozurdex™ is also effective for reducing the swelling of the retina in patients who have already had surgery to remove scar tissue on the retina.
NCT00746668
The purpose of this study is to measure the effectiveness of a newly-designed oculomotor training program for patients with macular disease, including age-related macular degeneration.
NCT00051129
The purpose of this study was to evaluate anecortave acetate compared to placebo for maintenance of visual acuity after 24 months of treatment in patients with subfovial choroidal neovascularization (CNV) due to exudative age-related macular degeneration (AMD).
NCT00211419
The purpose of this study is to evaluate the safety of combining juxtasclerally administered anecortave acetate 15 mg with triamcinolone acetate 4 mg administered intravitreally following photodynamic therapy with verteporfin for the treatment of exudative age-related macular degeneration (AMD).
NCT01244074
The Visual Pathfinder (LACE inc.) offers a non- invasive, patient- centered visual rehabilitation system based on an acoustic biofeedback. The investigators wanted to evaluate its usefulness in the improvement of visual function in visually impaired patients with high myopia.
NCT00125632
The purpose of this study is to measure the effectiveness of a newly-designed oculomotor training program for patients with age-related macular degeneration.