Active clinical trials for "Dry Eye Syndromes"

This is a prospective, observational case series to determine the clinical utility of tear osmolarity and other commonly used objective tests to diagnose dry eye disease, as well as to establish referent values for objective tests of the disease.

The objective of this study is to validate the performance of the OcuSense TearLab™ osmolarity test when performed in physician office laboratories (POL) by health care professionals using human tear fluid collected from volunteer subjects and contrived tear samples.

The purpose of this study is to measure the change in Tear Osmolarity during the course of the day to support clinical diagnosis of aqueous deficiency or meibomian gland disease and differentiate between the two forms of dry eye.

The primary objective of this study is the characterization of the ocular microbiome in a healthy cohort and in patients with dry eye disease using whole-metagenome shotgun sequencing. Secondary objectives are the identification of differences between the ocular microbiome of healthy controls and patients with dry eye disease as well as between the ocular and the gut microbiome.

First, preoperative biometry of the eye at the IOL Master® will be performed. Then, corneal topography will be measured at the Oculus pentacam®. Afterwards, one of two eye drops are instilled in the eye, and biometry and corneal topography will be repeated after 5 minutes. For all patients, the Barrett Universal II formula will be used for calculation of IOL power. Predicted refraction outcome will be referred to as SEQ. The chief surgeon will perform the uneventful standard cataract operation with in-the-bag implantation of a HOYA IOL (Model 251) through a 2.4-mm corneal incision. A Subjective Refraction using plus principle will be performed one month after the operation, and ETDRS visual acuity charts will be used to measure best-corrected visual acuity. Refraction will be described as SR (postoperative SEQ) and will be calculated as: SR = sphere + (0.5*cylinder)

To determine if Xiidra® lifitegrast plays a role in the refractive accuracy when administered to patients preoperatively who are scheduled for cataract surgery and have a tear break up time (TBUT) ≤ 10 seconds and central corneal staining as defined by the Oxford scale

This is a search strategy for determining the prevalence of ocular complications in inflammatory rheumatic diseases for the purposes of a meta analysis.

The purpose of this study is to collect samples from the surface of eyelids to try to grow and identify bacteria or fungus that might be present, and to try to understand why people have dry eye symptoms.

This observational study is intended to collect outcome data from a cohort of 90 patients suffering from symptoms of dry eye disease due to meibomian gland dysfunction who are treated with the medical device NovaTears® eye drops for a duration of 6 to 8 weeks.

This is an observational, study of dry eye in patients at the consultation visit prior to LASIK surgery. There is no treatment administered or intervention during the study.