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Updated: Mar 2, 2026
06:38
Induction of Ocular Surface Inflammation and Collection of Involved Tissues
Published on: August 4, 2022
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The Conjunctiva-Associated Lymphoid Tissue in Chronic Ocular Surface Diseases
Rodolfo Mastropasqua1, Luca Agnifili2, Vincenzo Fasanella2
11Moorfields Eye Hospital,London EC1V 2PD,UK.
Summary
Ocular surface diseases (OSDs) involve chronic inflammation driven by immune cells in the conjunctiva-associated lymphoid tissue (CALT). Further research is needed to clarify CALT's exact role in OSD development.
Area of Science:
- Ophthalmology
- Immunology
- Cell Biology
Background:
- Ocular surface diseases (OSDs) are increasingly prevalent, impacting quality of life.
- Cytokines from damaged ocular epithelia trigger immune responses in eye-associated lymphoid tissues.
- Conjunctiva-associated lymphoid tissue (CALT) plays a potential role in OSD pathogenesis.
Purpose of the Study:
- To investigate the role of CALT in the development of ocular surface diseases.
- To explore changes in CALT during OSDs using in vivo confocal microscopy (IVCM).
Main Methods:
- Utilized in vivo confocal microscopy (IVCM) to examine CALT in patients with dry eye, ocular allergy, and glaucoma.
- Observed changes in lymphoid cell populations within CALT.
Main Results:
- IVCM revealed increased lymphoid cells in the diffuse layer, follicles, and interfollicular spaces of CALT across different OSDs.
- These findings suggest CALT stimulation during OSDs, irrespective of the initial trigger.
Conclusions:
- CALT is likely stimulated during ocular surface diseases.
- The precise role of CALT in OSD pathogenesis requires further investigation and validation through immunohistology.
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