View clinical trials related to Xerophthalmia.
Filter by:The objective is to evaluate the safety, local tolerability, and pharmacokinetics of NCP112 eye drops through single and multiple dose-escalation ocular administrations in healthy adults.
To evaluate the Chinese herbal tea VGH-DESJS-1 in ocular and oral dryness symptoms of Dry eye syndrome and Sjögren's syndrome
Contrast sensitivity (CS) and tear film (TF) changes are noted in late postoperative period after upper blepharoplasty (UB), while the same was rarely investigated in the early postoperative period. The reason for aforementioned improvement of vision quality is unclear. Suggested explanations include changes in higher-order aberrations, elimination of the overlay effect created by excess skin on the upper eyelids and/or eyelashes directed toward the eyelid, or changes in corneal topography (CT) and keratometry. Furthermore, there is no consensus on the best technique for UB. Due not only to different surgical techniques, but also to different methods of measuring the tear film quality, it is very difficult to quantify the aforementioned studies. While changes in tear volume parameters and changes in tear film (TF) rupture have been investigated in detail, changes in the lipid layer have rarely been investigated. According to previous studies, there are different findings about changes in CT after UB. The aim of the research is to determine whether there are anatomical (CT) and functional (TF and CS) changes in subjects with functional dermatochalasis before the procedure and in a month-long postoperative period. The research is conducted on examinees diagnosed by clinical examination with functional dermatochalasis with the exclusion of examinees with ocular or systemic conditions affecting TF, best corrected visual acuity or CT. Detailed medical history and ophthalmologic examination will be performed with grading of the external appearance of the upper eyelids. All diseases and conditions that can lead to changes in CS, TF or corneal defects will be noted. Preoperatively all subjects will have CS recorded in photopic conditions, TF analysis and CT (Keratograph 5M, OCULUS Optikgeraete GmbH, Wetzlar, Germany). UB will be performed in the operating room at the UED. At first (seven days postoperatively) and second (one month postoperative) check-up a CS check will be performed at the UED and TF analysis and CT at Lens LTD.
This study wants to use a randomized, single-blind, controlled trial to evaluate the efficacy of receiving acupuncture GB20 or GB20 plus BL2 on alleviating the ocular dryness symptom from dry eye syndrome and Sjögren's syndrome. One hundred dry eye syndrome subjects are composed of 50 dry eye syndrome subjects and 50 Sjögren's syndrome' dry eye subjects, and all are randomized into 40 Group GB20 and 40 Group GB20 plus BL2 (GBL), and 20 Group Waiting list; while we also include 20 healthy controls. Fifty dry eye syndrome subjects are randomized into 20 Group GB20, 20 Group GBL and 10 Group Waiting list in first year; while both Group GB20 or GBL received acupuncture twice a week 8 weeks for efficacy evaluation, and 10 Group Waiting list receive no any acupuncture treatment. And we could use the Whole-genome genotyping, oral microbiota, Schirmer's test, Tear breakup time, Cytokines, OSDI, TCM pattern, Traditional Chinese Medicine (TCM) tongue diagnosis, TCM pulse diagnosis, and TCM heart rate variability for this purpose. In second year, another 50 dry eye syndrome subjects are also enrolled and randomized into randomized into 20 Group GB20, 20 Group GBL and 10 Group Waiting list; while both Group GB20 or GBL received acupuncture twice a week 8 weeks for efficacy evaluation with above outcome measurements, and 10 Group Waiting list receive no any acupuncture treatment. Meanwhile, we also include 20 healthy controls, and we want to find the difference with the comparison between the dry eye syndrome, Sjögren's syndrome and healthy control in second year. Through the analysis for dry eye syndrome and Sjögren's syndrome, we could find the biomarker to differentiate dry eye syndrome, Sjögren's syndrome and healthy control. In the future, this work could be applied for screening and diagnosis of pre-dry eye syndrome and Sjögren's syndrome, and this integrated TCM with Western Medicine plan could be applied for the goal of holistic health care.
200 participants at Eye Hospital of Wenzhou Medical University during September, 2020 to November, 2020 will be enrolled in this study. The meibomian gland related therapy are pulsed light therapy and meibomian gland hot compress massage.
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.
This is a search strategy for determining the prevalence of ocular complications in inflammatory rheumatic diseases for the purposes of a meta analysis.
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.
Dry Eye Syndrome (DES) is a disease affects the production and stability of the tear film, leading to vision disturbances and a major decrease in quality of life. The most recommended treatment for moderate-severe DES today which failed conservative therapy with lubricating eye drops is topical Cyclosporine 0.05% (Restasis®). The Tear Film Imager (TFI) is a novel imaging modality designed for visualization of the individual tear film layers up to a resolution of 0.1 micrometers, a property not enabled by any other imaging modality for this indication to date. In this study we wish to assess the effects of topical Cyclosporine 0.05% on the tear film using the TFI. In our previous study we found this modality yields high resolution images of the tear film, yielding significant differences between healthy and diseased (DES) eyes. We believe the TFI will improve quality of assessment and follow-up of DES patients, allowing more effective diagnosis and treatment of this disease in the future.
Screening of haitian children between the ages of 3 and 6 years old for amblyogenic risk factors with the use of the Spot photoscreener. The photoscreener results will be compared to the complete ophthalmologic evaluation. Primarily, this will allow evaluation of the performance of the spot photoscreener in the haitian children population. Secondarily, this study will gather epidemiological information on vision problems in the haitian children population.