PURPOSE To examine the differences in tear film parameters more than 3 months postsurgery in eyes with cataract surgery (surgical eyes) versus eyes without cataract surgery (nonsurgical eyes). METHODS 29 patients were seen at the Miami Veterans Affairs Medical Center (VAMC) who had cataract surgery by phacoemulsification in one eye more than 3 months prior to the study date and had no history...

Diquafosol is a drug used for dry eye treatment with a novel mechanism of action. It stimulates the secretion of tear fluid and mucin on the ocular surface, thus enabling us to selectively treat the tear film layer, playing an important role in the establishment of the concept of "Tear Film Oriented Therapy (TFOT)", an effective therapeutic approach to dry eye in Japan. The 3% diquafosol ophtha...

Ocular manifestations in patients with psoriasis vulgaris have been investigated in only a small number of studies. Our purpose was to identify tear film function and ocular pathologies associated with psoriasis vulgaris in patients who had received neither oral retinoids nor phototherapy. We examined 62 eyes of 31 patients with psoriasis and 60 eyes of 30 age-and-sex matched healthy volunteers...

The dynamics of the tear film are reviewed with specific reference to the biophysical aspects: distribution, turnover and elimination through evaporation, drainage, and absorption. The review concentrates on quantitative assessments and is confined to aspects of the dynamics that can be fully and directly measured. The techniques of fluorophotometry, fluorescein clearance, lacrimal scintigraphy...

The aim of the this study was to evaluate the effects of cloricrome, a new coumarin derivative, on dry eye model. Lacrimal gland inflammation-induced dry eye was performed by Concanavalin A (ConA) injection in rabbit, and matrix metalloproteinase-9 (MMP-9), TNFα, IL-1β and IL-8 were evaluated. Tear film integrity was investigated by measuring tear volume and tear breakup time. Elevated levels o...

PURPOSE To investigate the relationships between tear osmolarity and other ocular surface parameters and to determine the diagnostic value of tear osmolarity in primary Sjögren's syndrome (SS) using tear film break-up time, Schirmer I test, and cornea/conjunctiva staining. METHODS We included 310 eyes of 155 patients diagnosed with dry eye disease (39 primary SS and 116 non-Sjögren dry eye di...

We present an overset grid method to simulate the evolution of human tear film thickness subject to reflex tearing. The free-surface evolution is governed by a single fourth-order non-linear equation derived from lubrication theory with specified film thickness and volume flux at each end. The model arises from considering the limiting case where the surfactant is strongly affecting the surface...

PURPOSE To evaluate and compare the tear-film dynamics in normal eyes and in eyes with mild dry-eye symptoms using a new noninvasive optical method based on a double-pass instrument. SETTING Hospital Universitario Virgen de la Arrixaca, Murcia, Spain. DESIGN Evaluation of diagnostic test or technology. METHODS Dynamic recording of double-pass retinal images during unforced tear-film break...

PURPOSE To examine the dynamics of the tear film in patients with dry eye by measuring the wavefront aberrations of the anterior surface of the film. METHODS Anterior surface aberrations for a 7-mm pupil were determined in 13 patients with dry eye at 1-second time intervals, for 15 seconds after a blink. The aberrations were calculated from the elevations provided by corneal topography. All d...

Aim of the study is to determine connection between pseudoexfoliation (PEX) syndrome and symptoms and signs of ocular surface disease. Tear film break-up time test, Schirmer II test and assessment of lid parallel conjunctival folds were performed in 40 PEX syndrome patients and 40 controls. All data was statistically analyzed. Results show statistically significant difference in every component...