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Tear osmolarity and ocular changes in pterygium
Gemma Julio1, Sara Lluch, Pere Pujol
1Ocular Surface Research Group, Optics and Optometry Department, Universitat Politècnica de Catalunya, and Department of Opthalmology, Terrassa Hospital, Terrassa Health Consortium, Terrassa, Spain. julio@oo.upc.edu
Cornea
|August 21, 2012
Summary
Pterygium increases tear osmolarity (TO), negatively impacting tear crystallization and goblet cell density (GCD). Understanding TO changes is key to managing pterygium and ocular surface health.
Area of Science:
- Ophthalmology
- Ocular Surface Disease
- Tear Film Dynamics
Background:
- Pterygium is a common ocular condition.
- Tear film abnormalities are associated with ocular surface diseases.
- Tear osmolarity (TO) is a critical indicator of ocular surface health.
Purpose of the Study:
- To investigate tear osmolarity (TO), tear function, and impression cytology in pterygium patients.
- To evaluate the relationship between these parameters in pterygium.
- To understand the impact of pterygium on the ocular surface environment.
Main Methods:
- Comparative study involving 30 pterygium patients and 30 controls.
- Assessment of tear osmolarity (TO), tear ferning test, fluorescein tear breakup time, Schirmer test, and conjunctival impression cytology.
- Statistical analysis using ANOVA and Pearson correlation.
Main Results:
- Pterygium patients exhibited significantly higher TO compared to controls.
- Lower tear crystallization percentage and goblet cell density (GCD) were observed in pterygium patients.
- A negative correlation was found between TO and crystallization percentage, and between TO and GCD.
Conclusions:
- Pterygium is associated with increased tear osmolarity (TO).
- Elevated TO may lead to altered tear crystallization and reduced goblet cell density (GCD).
- Monitoring TO is crucial for understanding pterygium's effects on tear film and ocular surface.
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