Active clinical trials for "Dry Eye Syndromes"

Human autologous serum is commonly used in the treatment of dry eye disease. However, different patients may have different effect with autologous serum treatment. We would like to find if different autologous serum had different component of cytokines in different etiologies of dry eye.

The objective of this study is to evaluate the efficacy of Diquafosol 3% in the management of dry eyes before and after cataract surgery. Patients with pre-existing dry eyes and planned for cataract surgery will be started on Diquafosol eyedrops prior to surgery and treatment will be continued after cataract surgery. Eligible patients will undergo evaluation of dry eye at baseline and subsequently started on treatment with Diquafosol for the duration of 4 weeks before surgery. Further evaluations will be conducted on the day of surgery and at designated time points during and up to 12 weeks after surgery.

The specific aims of the the investigators studies are as follows: To collect the tear samples from patients with different ocular surface disorders, including SLK, conjunctivochalasis, and keratoconjunctivitis sicca (KCS). To evaluate the differential expression of tear cytokines and pH values between different ocular surface disorders. To collect the surgical conjunctival specimens from the patients with SLK and conjunctivochalasis. To evaluate the factors inducing mast cell migration and how mast cell is activated in SLK via surgical specimens and cultivated fibroblast.

This is a single center clinical study designed to determine patient satisfaction and the effect of the use of artificial tears on tear osmolarity with time after instillation of three commercially available artifical tear eye solutions ( Blink Tears, Blink Gel Tears and Systane Balance).

Dry eye disease is related with oxidative stress at the ocular surface. GSH is one of the key factor of protect from oxidative stress. To evaluate thiol status of ocular surface cells by monitoring GSH concentration, we can evaluate the severity of dry eye.

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.

Autologous serum eye drops (ASE) have been becoming popular in treatment of severe dry eye for the past decade. One of the most beneficial properties of the ASE over artificial eye drops is the epitheliotropic capacity owing to the presence of growth factors and other proteins. There have been reports on alteration of serum growth factors in autoimmune diseases such as rheumatoid arthritis. Alteration in serum growth factors may lead to different therapeutic effect of ASE. We therefore would like to know if there are any alteration growth factors, epidermal growth factor (EGF), transforming growth factor-beta1 (TGF-β1), transforming growth factor-beta2 (TGF-β2), and fibronectin, in ASE from Stevens-Johnson syndrome (SJS) patients with dry eye, which constitutes a major group of ASE usage in Siriraj Hospital, as compared with non-autoimmune dry eye. We also study stability of these factors following different storage conditions.

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.

To review the relationship of increased face mask usage arising from lockdown measures instituted during the COVID-19 pandemic with dry eye symptoms on Chinese people, and make recommendations for mitigating potential detrimental effects on dry eye symptoms.

To explore the association among TCM pattern, TCM tongue diagnosis and TCM pulse diagnosis for Autoimmune disease and Dry eye syndrome