Access the full text.
Sign up today, get DeepDyve free for 14 days.
M. Hawes (1988)
The Dacryolithiasis SyndromeOphthalmic Plastic & Reconstructive Surgery, 4
J. Caldeira, W. Luthold, E. Sabbaga (1982)
Tear calcium levels in normal subjects.Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde, 184 2
R. Fullard, Denise Tucker (1991)
Changes in human tear protein levels with progressively increasing stimulus.Investigative ophthalmology & visual science, 32 8
M. Norn (1988)
Tear fluid pH in normals, contact lens wearers, and pathological casesActa Ophthalmologica, 66
K. Sasaki (1995)
[Measurement of pH, time-dependent-changes in pH, [Na+], and [K+] in human tears--comparison between normal subjects, subjects with decreased tear secretion, and contact lens wearers].Nippon Ganka Gakkai zasshi, 99 6
(1993)
Technical note: Computed tomographic dacryo- cystography
E. Iliadelis, V. Karabatakis, M. Sofoniou (1999)
Dacryoliths in Chronic Dacryocystitis and Their Composition (Spectrophotometric Analysis)European Journal of Ophthalmology, 9
K. Bjerrum, J. Prause (1994)
Collection and concentration of tear proteins studied by SDS gel electrophoresis Presentation of a new method with special reference to dry eye patientsGraefe's Archive for Clinical and Experimental Ophthalmology, 232
W. Bachman, G. Wilson (1985)
Essential ions for maintenance of the corneal epithelial surface.Investigative ophthalmology & visual science, 26 11
M. Orhan, M. Önerci, V. Dayanır, D. Orhan, T. Irkeç, Murat Irkec (1996)
Lacrimal Sac Dacryolith: A Study with Atomic Absorption Spectrophotometry and Scanning Electron MicroscopyEuropean Journal of Ophthalmology, 6
B. Yazıcı, A. Hammad, D. Meyer (2001)
Lacrimal sac dacryoliths: predictive factors and clinical characteristics.Ophthalmology, 108 7
R. Fullard, Christopher Snyder (1990)
Protein levels in nonstimulated and stimulated tears of normal human subjects.Investigative ophthalmology & visual science, 31 6
P. Andreou, G. Rose (2002)
Clinical presentation of patients with dacryolithiasis.Ophthalmology, 109 8
K. Saari, E. Aine, A. Posz, M. Klockars (2005)
Lysozyme content of tears in normal subjects and in patients with external eye infectionsGraefe's Archive for Clinical and Experimental Ophthalmology, 221
M. Wearne, J. Pitts, J. Frank, G. Rose (1999)
Comparison of dacryocystography and lacrimal scintigraphy in the diagnosis of functional nasolacrimal duct obstructionBritish Journal of Ophthalmology, 83
R. Lundh, S. Liotet, Y. Pouliquen (1984)
Study of the human blood-tear barrier and the biochemical changes in the tears of 30 contact lens wearers (50 eyes).Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde, 188 2
Dacryolithiasis is one of the causes of acquired nasolacrimal duct obstruction, although its origin is unclear. The purpose of this study was to investigate the differences in tear constituents between patients with nasolacrimal duct obstruction with dacryoliths and those without dacryoliths. In a prospective case-control study, undiluted tears were collected from 30 eyes from 30 patients with partial acquired nasolacrimal duct obstruction (PANDO) consisting of 17 PANDO patients with dacryoliths and 13 PANDO patients without dacryoliths. The pH, and the Na<sup>+</sup>, K<sup>+</sup>, Cl<sup>–</sup>, total calcium and total protein concentrations were determined. The composition of the tear proteins was assessed by cellulose acetate electrophoresis. In the tear samples from 17 eyes with PANDO/dacryoliths, the mean ± SD K<sup>+</sup> level was 15.6 ± 3.1 mEq/l. In the tear samples from 13 PANDO controls, the mean ± SD K<sup>+</sup> level was 19.8 ± 4.9 mEq/l. The difference between the two groups was statistically significant (p = 0.02). In the tear samples from PANDO/dacryolith patients, the mean ± SD total protein level was 129.0 ± 72.9 mg/dl. In the tear samples from the PANDO controls the mean ± SD total protein level was 261.6 ± 132.5 mg/dl. The difference between the two groups was statistically significant (p = 0.00). In the tear protein fractions from electrophoresis, a low level of lysozyme was observed in the PANDO/dacryolith samples compared with the PANDO control samples (p = 0.03). The tears from patients with PANDO due to dacryoliths showed a change in the concentrations of electrolytes and protein, particularly lysozyme, compared with that of the patients with PANDO without dacryoliths, which may be related to the pathogenesis of dacryoliths.
Ophthalmologica – Karger
Published: Apr 1, 2004
Keywords: Tear; Dacryolith; Nasolacrimal duct obstruction
Read and print from thousands of top scholarly journals.
Already have an account? Log in
Bookmark this article. You can see your Bookmarks on your DeepDyve Library.
To save an article, log in first, or sign up for a DeepDyve account if you don’t already have one.
Copy and paste the desired citation format or use the link below to download a file formatted for EndNote
Access the full text.
Sign up today, get DeepDyve free for 14 days.
All DeepDyve websites use cookies to improve your online experience. They were placed on your computer when you launched this website. You can change your cookie settings through your browser.