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The morphology of human conjunctival mucus
Archives of Ophthalmology (Chicago, Ill. : 1960)
|April 1, 1979
Summary
Normal human eye mucus forms a network that traps debris, cells, and bacteria. Blinking collapses this network, clearing the eye surface of contaminants and lipid-rich mucus.
Area of Science:
- Ophthalmology
- Cell Biology
- Biophysics
Background:
- The ocular surface is constantly exposed to environmental factors.
- Maintaining ocular surface health involves efficient clearance mechanisms.
- The role of conjunctival mucus in ocular surface homeostasis is not fully understood.
Purpose of the Study:
- To investigate the structure and function of normal human conjunctival mucus.
- To elucidate the dynamic behavior of mucus on the ocular surface.
- To understand the mucus network's role in clearing debris and contaminants.
Main Methods:
- Permeable membrane filter (Millipore) surface biopsy of conjunctival mucus.
- India ink instillation to visualize mucus network and entrapped particles.
- Microscopic examination of mucus structure and behavior.
Main Results:
- Conjunctival mucus exists in solution, as granules, sheets, and a network structure.
- The mucus network entraps exfoliated epithelial cells, debris, carbon particles, and bacteria.
- Blinking causes mucus network collapse into a strand, moving it to the medial canthus for removal.
- Mucus stains positively for lipid.
Conclusions:
- The mucus network is a dynamic system for clearing the ocular surface.
- This system removes exfoliated cells, debris, pathogens, and lipid-contaminated mucus.
- Mucus network formation and collapse contribute to ocular surface hygiene.