View clinical trials related to Keratoconjunctivitis Sicca.
Filter by:The primary objectives of this study are the characterization of the ocular microbiome as well as of the local immune system in participants with and without dry eye disease. Secondary objectives are the identification of differences in the ocular microbiome as well as in the immune system between participants with and without dry eye disease to ultimately find associations between the ocular microbiome and the immune system in dry eye disease.
The objective of this study is to compare the safety and efficacy of 0.25% HBM9036 (HL036) Ophthalmic Solution to placebo for the treatment of the Chinese subjects with moderate and severe dry eye.
This prospective, single-center, randomized, double-masked, parallel comparison, sponsored study seeks to investigate the efficacy of Intracanalicular dexamethasone Insert (IDI) on ameliorating the signs and symptoms of dry eye disease.
To investigate the clinical outcome of Lipiflow treatment prior to cataract surgery in patients with meibomian gland dysfunction and dry eye disease
Two methods allow to evaluate tear breakup time (BUT): without prior dye instillation (No Dye BreakUp Time NDBUT) or after fluorescein instilation (FBUT). The interconnections between those two values are unknown
Dry eye disease (DED) is a chronic ocular surface disease and the prevalence of DED has been reported as high as 50%. Recently, The international Dry Eyes Workshop II (DEWS II) defines dry eye as a "multifactorial disease of the ocular surface characterized by a loss of homeostasis of the tear film, and accompanied by ocular symptoms, in which tear film instability and hyperosmolarity, ocular surface inflammation and damage, and neurosensory abnormalities play etiological roles". A study done by Yoon et al. on 31 patients with severe DED concluded that UCS eye drops are effective and safe in treating severe DED. Studies found that EGF, TGF-β, VEGF and vitamin A levels were significantly higher in UCS than peripheral blood serum(PBS) whereas IGF content was significantly higher in PBS than in CBS. Yoon et al. then conducted another study whereby he compared UCS to AS in treating both Sjögren syndrome and non- Sjögren syndrome patients with severe dry eyes. They concluded that UCS eye drops were more effective in decreasing symptoms and keratoepitheliopathy in severe dry eye syndrome and increasing goblet cell density in Sjögren syndrome compared with AS drops. Despite proven more effective in treating DED, serum eye drops are not yet widely manufactured due to a few reasons. This study is chosen because 1. Not many previous clinical trials done related to UCS eye drops. 2. There were only two clinical trials done before to compare the use of UCS eye drops versus conventional AT eye drops on Hansen's disease and acute ocular chemical burn injury population. 3. To apply the newer technology of Keratograph® 5M in DED assessment. 4. To initiate a proper standard operating procedure for production as well as delivery of serum eye drops which allowing out-patient treatment with serum eye drops possible.
The purpose of this study is to determine whether Umbilical Mesenchymal Stem Cells (UMSCs) derived Exosomes could alleviate dry eye symptoms in patients with chronic Graft Versus Host Diseases (cGVHD).
This study will be a randomized, double-blind prospective in 3 clinical sites to compare the efficacy of two currently approved topical ophthalmic drops in the clearing central corneal staining in 90 days prior to elective cataract or LASIK surgery.
This is a single site, prospective, cross-sectional, controlled clinical study on a total of 66 subjects. The subjects are divided into two groups: Hypertonic Saline Non-Responders (33 subjects) and Hypertonic Saline Responders (33 subjects). After completion of questionnaires, the subjects will undergo Dry Eye Disease testing and functional nerve testing. Subjects who qualify will be dispensed 4 weeks of preservative free artificial tears and instructed to instill one drop into each eye twice daily. Subjects will return for a follow up visit 4 weeks later (± 4 days), during which subjects will complete the questionnaires again and the Dry Eye Disease tests and functional nerve tests will be repeated.
Dry eye is a common ocular surface disease of multifactorial etiology characterized by elevated tear osmolality and inflammation leading to a disrupted ocular surface. The latter is a risk factor for ocular surface infection, yet overt infection is not commonly seen clinically in the typical dry eye patient. This suggests that important innate mechanisms operate to protect the dry eye from invading pathogens. Understand the pathogenesis of dry eye will be the measure to prevention and treatment of dry eye. In this essay, the investigators use the data of experiment in the patients with dry eye and normal, acquire their tear production, tear film stability, and surface damage. The investigators use weka to calculate the prediction accuracy of the 6 algorithm and select the best one, optimize the parameters to get the final prediction accuracy.