View clinical trials related to Keratoconjunctivitis Sicca.
Filter by:A clinical trial using Senofilcon A daily lenses in the treatment of moderate to severe dry eye. This a comparison between signs and symptoms prior to and during treatment.
This study was conducted to investigate the effects of daily supplementation of Hydrolysed Red Ginseng Extract extract on dry eye.
This study evaluates the effectiveness of levocarnitine in the treatment of dry eye in adults with Sjogren's syndrome. This will be a crossover study design with all participants receiving both levocarnitine and placebo.
This trial is a randomized, parallel-group, double-blind, controlled clinical trial to evaluate the effect of hyaluronic acid (HA) on dry eye disease.
In this study, the TearCare System will be compared with the LipiFlow Thermal Pulsation System in patients with dry eye disease. The objective is to demonstrate that the TearCare System is safe and effective in relieving the signs and symptoms of dry eye disease. NOTE: All sites have been selected for this study. We are not seeking additional sites at this time.
2017 International Dry Eye Workshop (DEWS) defines dry eye as a multifactorial ocular surface disease characterized by tear film instability with disturbed visual function. As a smooth transparent structure and the outmost layer of the whole ocular refractive system, tear film plays an important role. In dry eye, the instability of tear film caused by a lack of tear volume or high evaporation makes it more vulnerable to break up during blinking intervals, exposing the rough epithelium of the corneal surface and introducing extra aberrations and scatter. This would affect image sharpness on the retina and lower the optical quality. Also, it had been observed that the dynamic tear film scattering was reduced and the objective optical quality was improved transiently after artificial tears instillation. Though these findings supported the fact of visual quality impairment in dry eye. It remains unclear how does the tear film instability affect the visual quality in specific. Whether it lowers the optical quality of the whole ocular or just affects the tear-film associated part alone and whether there is a correlation with the tear film function are still unknown and to be answered. So we wondered whether there is a correlation between the tear film function and the related optical quality in dry eye. Though it had been inspected that the invasive tear break up time by fluorescein staining was positively correlated with the related scattering of tear film. To the newest dry eye diagnosis criteria of 2017 DEWS, the non-invasive tear break-up time has been amended to the first line instead of the invasive methods, e.g. fluorescein staining, which was thought to be less accurate and less credible. What's more, the invasive method of tear film evaluation might introduce confounding factors to the successive optical quality assessment. So we need a more accurate investigation to the relationships of the tear film function and the optical quality in dry eye. This study was intended to measure the non-invasive tear break-up time and the objective optical quality in normal people and dry eye patients to illustrate this question. In addition, we will investigate the relation of evolution trends of NIKBUT and objective optical quality under artificial tears for a better illustration.
Dry eye disease (DED), as one of the most common ocular surface diseases that affecting visual acuity, is highly associated with ocular surface inflammation. Until now, there is no accurate quantization index system to evaluate real-time ocular surface inflammation. Besides, an individualized therapy for ocular surface inflammation is also badly needed. As we all know, conjunctival congestion is one of the important clinical appearance of ocular surface inflammation. Hence, we suggest that several specific microvascular indexes could measure the change of ocular surface inflammation. Our program is aiming to investigate the correlation between inflammatory factors and blood flow velocity as well as microvascular distribution detecting from bulbar conjunctiva through our own devices and software.Futhermore, we tend to compare ocular surface microvascular indexes and microvascular distribution in normal people and dry eye patients in order to establish a database for Chinese people. By confirming the relationship between ocular surface microvascular indexes and ocular inflammation, we hope to set up new diagnostic criteria for ocular inflammation and an individualized therapeutic regimen based on ocular surface microvascular indexes. Finally, we want to establish a precision diagnostic and therapeutic pattern for dry eye disease.
Dry eye disease, ocular graft-versus-host disease (GVHD), and superior limbic keratoconjunctivitis (SLK) are all ocular surface disorders which mostly involve the outer surface of the eye. Many of the ocular surface disorders may result from or be aggravated by the mechanical stress from eyelid blinking. Specifically, SLK is an inflammatory ocular surface disorder characterizing by redundant superior bulbar conjunctiva. Since redundant superior bulbar conjunctiva can cause a significant mechanical force during eyelid blinking, we found that conjunctival resection with Tenon's capsule excision is helpful in relieving the symptoms of SLK patients. Therapeutic contact lens, protecting the ocular surface from the microtrauma between eyelid and ocular surface, is also an effective treatment for severe dry eye disease, ocular GVHD, and SLK. Although shearing force/mechanical stress has been studied in many different tissues and disease entities, the impact of shearing force over ocular surface is still unclear. While the importance of mechanical stress in ocular surface disorder has been reported, the specific molecule involving the pathogenesis is still unknown. Diadenosine polyphosphates are a family of dinucleotides. They can enhance tear secretion and increase corneal wound healing rate from previous reports. Shear-stress stimuli was also noted to be able to induce diadenosine polyphosphates releasing from human corneal epithelium. In addition, mucin, one of the three components of tear film, has been greatly emphasized in the pathogenesis of dry eye disease. There are also some reports about the shearing force compensating the mucin contents in the inflammatory lung/bowel diseases. If diadenosine polyphosphates or mucin indeed play a role in mechanical stress-related ocular surface disorders, it will be a promising therapeutic targeting in the future.
This is a single-center, randomized, controlled trial to evaluate the safety and efficacy of eyelash prostheses versus 5.0% Lifitegrast BID, in 40 patients (20 randomized to each of two arms of the study) evaluated at 3 weeks and 5 weeks, respectively, after initiation of treatment.
The DRy eye Outcome and Prescription Study (DROPS) is a large observational multicentre study exploring the 'real world' effectiveness of artificial tears in dry eye disease and determinants of efficacy. The aim is to include at least 635 symptomatic dry eye patients who are prescribed artificial tears. All trainees and fellows in London are invited to become collaborators: collaborators are asked to consent patients, assess signs at baseline, and give patients questionnaires at baseline and 4 weeks (for home completion). In tandem, we are conducting a qualitative review of ophthalmologists' prescribing behaviours for dry eye disease.