Results 251 to 260 of about 1,450,826 (291)
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Video Biomicroscopy of the Tear Film
1998The tear film is produced by the lacrimal gland, the accessory lacrimal glands, and the goblet cells of the conjunctiva, with the meibomian glands of the eyelids providing an oily surface layer. The tear film covers the eye and is drained from the surface via two puncta that lead through the canaliculi to the lacrimal sac, which is in the lacrimal ...
P N, Dilly, M, Guillon, L, McGrogan
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Tear Film Osmolarity in Epiphora
Ophthalmic Plastic & Reconstructive Surgery, 2012To examine whether patients complaining of epiphora have tears of a lower osmolarity.Sixty-three eyes of 39 patients attending an oculoplastic clinic with a primary complaint of epiphora, had their tear osmolarity recorded. Subjects were excluded if they had current or recent topical eye therapy, active ocular infection or allergy, ocular surface ...
George M, Saleh +4 more
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Tear Osmolarity and Tear Film Parameters in Patients With Unilateral Pterygium
Cornea, 2014The aim of this study was to evaluate the differences in tear osmolarity and tear film parameters between pterygium-affected and healthy fellow eyes.The study enrolled 65 patients with unilateral pterygium. Tear osmolarity, tear film break-up time (TBUT), Schirmer I test measurements, fluorescein corneal staining, and conjunctival redness were ...
Özsütçü, Mustafa +5 more
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Duplex Tear Film Evaporation Analysis
Bulletin of Mathematical Biology, 2017Tear film thinning, hyperosmolarity, and breakup can cause irritation and damage to the human eye, and these form an area of active investigation for dry eye syndrome research. Recent research demonstrates that deficiencies in the lipid layer may cause locally increased evaporation, inducing conditions for breakup.
Stapf, M. R. +2 more
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Veterinary Clinics of North America: Small Animal Practice, 1990
Abnormalities of the lipid and mucin components of the preocular tear film may result from diseases of the eyelid margins and conjunctiva. Chronic keratoconjunctivitis with epithelial edema and superficial corneal neovascularization, with or without ulceration, characterizes qualitative tear diseases.
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Abnormalities of the lipid and mucin components of the preocular tear film may result from diseases of the eyelid margins and conjunctiva. Chronic keratoconjunctivitis with epithelial edema and superficial corneal neovascularization, with or without ulceration, characterizes qualitative tear diseases.
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Acta Ophthalmologica, 2011
AbstractPurpose Patient complaints such as blurry vision are a very common symptom of dry eye syndrome. We will summarize technologies to measure the optical effects of tear film instability.Methods There are several noninvasive techniques for assessing the kinetics of tear film : high‐speed videokeratoscopy, dynamic wavefront sensing and lateral ...
Y NOCHEZ, T HABAY, PJ PISELLA
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AbstractPurpose Patient complaints such as blurry vision are a very common symptom of dry eye syndrome. We will summarize technologies to measure the optical effects of tear film instability.Methods There are several noninvasive techniques for assessing the kinetics of tear film : high‐speed videokeratoscopy, dynamic wavefront sensing and lateral ...
Y NOCHEZ, T HABAY, PJ PISELLA
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Journal of Colloid and Interface Science, 1982
Abstract It is shown theoretically that tear film rupture may be caused by the dispersion force with or without the assistance of gravity. Both the surface tension and viscosity of the tear are shown to be stabilizing factors.
S.P Lin, Howard Brenner
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Abstract It is shown theoretically that tear film rupture may be caused by the dispersion force with or without the assistance of gravity. Both the surface tension and viscosity of the tear are shown to be stabilizing factors.
S.P Lin, Howard Brenner
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Formation and rupture of the tear film
Experimental Eye Research, 1973Abstract The formation of the preocular tear film successive to each blink is discussed in terms of surface chemical characteristics of the lid-cornea system. The interaction of conjunctival mucin with water and lipids is found to be the most important factor responsible for the spontaneous, rapid spreading of the fluid phases and for the stability ...
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Diet, nutraceuticals and the tear film
Experimental Eye Research, 2013Nutrition disorders and their correlates such as obesity are increasingly prevalent worldwide. A number of studies to date have suggested numerous potential associations between diet and tear film health; this paper will provide a summary of the available literature.
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Structure and Function of the Tear Film
1994The existence of the tear film is well known but its structure is less well understood. It is unwise to consider the tear film in isolation from blinking. Blinking has a profound influence upon the structure, stability, and function of the tear film.
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