geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Lacrimal flow


, : Lacrimal flow. Documenta Ophthalmologica 42(2): 375-380

Synkinetic reflex or isolated orbicularis muscle contraction [human] squeezes the tear sac between Horner's muscle and the inner palpebral ligament, closes the canaliculi and prevents conjunctival fornix backflow, while the tears are expressed (pseudo-peristaltism) towards the nose through the flexible naso-lacrimal canal. The diameter at the level of the canaliculi should be kept optimal to allow proper suction towards the tear sac and free capillarity since surface tension varies to a lesser extent. Radiography of lacrimal outflow-channels provides important information on the morphology and physiopathology of the lacrimal ducts, ruling out eventual functional origin of the lacrimation. The technique is especially important in decision making for treatment (allergic conditions, congenital dacryocystitis) for evaluation of dacryocystorhinostomy and for the early diagnosis and management of infection, inflammation and post-traumatic conditions of the face and anterior skull.

US$19.90

PMID: 193675

DOI: 10.1007/bf02742251


Other references

Heo J.; Nguyen T.; Iskandrian A., 1990: Prediction of left main and left main equivalent disease by single photon emission computed tomographic thallium imaging. Journal of Nuclear Medicine 31(5 SUPPL): 763

Barr, H.L.; Ottenberg, D.J.; Rosen, A., 1973: Two year follow-up study of 724 drug addicts and alcoholics treated together in an abstinence therapeutic community. Proceedings. National Conference on Methadone Treatment 1: 296-305

Watson, D.P., 1971: Frangipani from Hawaii. Brief descriptions are given of Plumeria acuminata, P. obtusa, P. rubra, P. alba and P. bahamensi, with some indication of their commercial value.

Meakins, J.C., 1955: The physician's responsibility to the aging population. Postgraduate Medicine 17(5): 420-423

Thisse, C.; Thisse, B.; Postlethwait, J.H., 1995: Expression of snail2, a second member of the zebrafish snail family, in cephalic mesendoderm and presumptive neural crest of wild-type and spadetail mutant embryos. Transcripts of a newly discovered gene called snail2, encoding a zinc finger protein of the Snail family, first appear in rows of cephalic mesendodermal cells in gastrulating zebrafish embryos. At the end of gastrulation, snail2 RNA accumulates in...

Fan, S-Yong.; Zheng, Z-Bing.; Mi, C-Lai.; Zhou, X-Bo.; Yan, H.; Gong, Z-Hui.; Li, S., 2009: Synthesis and evaluation of novel chloropyridazine derivatives as potent human rhinovirus (HRV) capsid-binding inhibitors. Human rhinovirus (HRV) is the most important etiologic agent causing common colds. No effective anti-HRV agents are currently available. In this paper we describe the synthesis and the evaluation of novel chloropyridazine derivatives (compounds 5a...

Furitano G.; Salerno L.; Cerasola G.A.; Custro N., 1974: Study of the localized circulation of athero sclerotic subjects when treated with dextro thyroxine. Bollettino Societa Italiana Biologia Sperimentale 50(16): (1975) 1273-1276

Landmann, A.; Thaler, ME., 1984: Zum Vorkommen und Status der Lachmowe (Larus ridibundus) in Nordtirol (Aves: Laridae). The occurrence of the black-headed gull in north Tyrol is discussed. The species does not breed in the region itself but is a regular spring and autumn migrant. Most records originate from the north-eastern part of the tyrolean Inn Valley. The pat...

Mueller, C.; Schubiger, P.A.gust; Schibli, R., 2007: Isostructural folate conjugates radiolabeled with the matched pair Tc-99m/Re-188: a potential strategy for diagnosis and therapy of folate receptor-positive tumors. Tc-99m-technetium (Tc-99m) and Re-188-rhenium (Re-188) represent an interesting pair of radionuclides for diagnosis and therapy. The aim of this study was to synthesize and characterize in vitro/in vivo the first Re-188-folate derivative [Re-188(...

Vivekanandan, M., 1984: Recycling of tannery and sewage effluents. The potential of E. crassipes for removing toxic metals from sewage effluent and distillery spent wash is reviewed. The subsequent use of recycled water for irrigation is discussed.