Results 241 to 250 of about 1,450,826 (291)
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Tear film imager for dynamic mapping of the human tear film
Applied Optics, 2019Dry eye (DE) disease is a multifactorial disease of the outer ocular surface characterized by several ocular symptoms and mainly by tear film instability. We have developed an optical imaging system, the tear film imager (TFI), which is the first instrument that can directly image the muco-aqueous tear layer physical dimension in vivo and evaluate its ...
Yoel, Cohen +5 more
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Tear film stability and tear surface tension
Current Eye Research, 1989Surface tension has been measured by the method of Ferguson and Kennedy on small (0.3-0.4 microliter) samples of tears from 65 normal and 35 dry eyes. Non-invasive break-up time (NIBUT) was also measured on the same patients as an indication of tear film stability.
J M, Tiffany, N, Winter, G, Bliss
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American journal of optometry and physiological optic, 1981
Abstract A contact lens practitioner needs to know more about the quantity and quality of the patient's tears. Methods are described for assessing the pH, osmotic pressure, protein content, and glucose content of tears.
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Abstract A contact lens practitioner needs to know more about the quantity and quality of the patient's tears. Methods are described for assessing the pH, osmotic pressure, protein content, and glucose content of tears.
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In vivo tear-film thickness determination and implications for tear-film stability
Current Eye Research, 1998Previous measurements of tear-film thickness in vivo are limited and cannot be easily applied in a clinical setting. A novel technique to measure tear-film thickness indirectly is introduced here, requiring only a slit lamp, video camera, and computer.
J L, Creech +3 more
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Interpretation of Tear Film Breakup
Archives of Ophthalmology, 1977Tear film breakup time (BUT) was measured in 25 normal subjects on 8 different occasions over a period of one month. Reproducibility of the BUT test and factors involved in interpretation of tear film breakup were studied. It was found that of 50 eyes, the average BUT ranged from five to 100 seconds, and that there were noticeable variations (P less ...
G T, Vanley, I H, Leopold, T H, Gregg
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American journal of optometry and physiological optic, 1980
Abstract Current understanding of tear film physiology is based on the anatomy of each of the three layers, as well as on the changes that occur with blinking and on the physicochemical properties of the tear fluid. Abnormalities in tear film may be due to deficiency of aqueous tears or mucin, changes in the lipid layer, inadequate ...
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Abstract Current understanding of tear film physiology is based on the anatomy of each of the three layers, as well as on the changes that occur with blinking and on the physicochemical properties of the tear fluid. Abnormalities in tear film may be due to deficiency of aqueous tears or mucin, changes in the lipid layer, inadequate ...
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Role of lactoferrin in the tear film
Biochimie, 2009The surface of the eye provides an inert barrier against infection. Through its unique combination of antimicrobial action and anti-inflammatory activities lactoferrin (Lf) in the tear film plays an important role in the maintenance of ocular health. In order to maintain clarity the eye must provide immunological defense without immunopathology.
J L, Flanagan, M D P, Willcox
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2008
To survey briefly current knowledge on the normal preocular tear film.Sections deal with: (1) Formation of the film, its physical dimensions and rates of inflow and outflow of tears, and briefly the pathways of nervous control of tear production in the main lacrimal gland and accessory lacrimal tissue. (2) The protein and electrolyte composition of the
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To survey briefly current knowledge on the normal preocular tear film.Sections deal with: (1) Formation of the film, its physical dimensions and rates of inflow and outflow of tears, and briefly the pathways of nervous control of tear production in the main lacrimal gland and accessory lacrimal tissue. (2) The protein and electrolyte composition of the
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Identification of hemopexin in tear film
Analytical Biochemistry, 2010Human tear fluid is a complex mixture of aqueous lipids, proteins, enzymes, and other biochemical and cellular elements. By conventional comparative proteomic approaches, we investigated the proteome in human tear fluid and compared the tear protein profile of normal control subjects with that of patients suffering from the ocular inflammatory disease ...
Jeffrey C F, Pong +6 more
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<p>Tear film surface from patiens before and after cataract surgery</p ...
Szczęsna-Iskander, Dorota
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