The biophysical role in tear regulation

Alan Tomlinson*, Jennifer P. Craig, Gerald E. Lowther

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

15 Citations (Scopus)

Abstract

The mechanism that determines and regulates tear production in the human eye has not been established. One suggested mechanism involves mediation through changes in the physical parameters of tears. Von Bahr1 was the first to propose that tear osmolality was a function of tear production and elimination. This view was elaborated by Mishima2 who suggested that the regulation of tear production was controlled by changes in tear tonicity, increases in tear tonicity leading to an increase in tear production in the normal eye, to protect the cornea from harmful changes in osmotic balance.3,4 In the instance in which low tear evaporation or an impaired drainage system occurred, this would lead to the accumulation of tears in the eye, low tonicity, and the consequent inhibition of tear production. Conversely, if high evaporation occurred in the presence of a patent drainage system this would lead to reduced tear volume, an increase in tonicity, and a stimulus to production.
Original languageEnglish
Title of host publicationLacrimal Gland, Tear Film, and Dry Eye Syndromes 2: Basic Science and Clinical Relevance
EditorsDavid A. Sullivan, Darlene A. Dartt, Michele A. Meneray
PublisherSpringer Nature
Pages371-380
Number of pages10
ISBN (Electronic)9781461553595
ISBN (Print)9780306458125, 9781461374459
DOIs
Publication statusPublished - 1998

Publication series

NameAdvances in Experimental Medicine and Biology
Volume438
ISSN (Print)0065-2598
ISSN (Electronic)2214-8019

ASJC Scopus subject areas

  • General Biochemistry,Genetics and Molecular Biology

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