The goal of this clinical trial is to examine the effect of low-level light therapy (LLLT) on meibomian gland dysfunction and dry eye disease. The main questions it aims to answer are: 1. Does low-level light therapy reduce levels of pro-inflammatory proteins in meibum 2. Does low-level light therapy increase the ratio of non-polar lipids to polar lipids in meibum Participants will receive 3 15-minute sessions of low-level light therapy. Meibum will be collected before the first treatment and after the final treatment.
Low-level light therapy (LLLT) is a treatment for meibomian gland dysfunction. The proposed mechanism of action is photobiomodulation of cells leading to improved adenosine triphosphate synthesis, reduction of reactive oxygen species in oxidatively-stressed cells, and the activation of transcription factors involved in cellular proliferation, migration and survival. Understanding of how low-level light therapy based therapy alters meibomian gland function is poor. This study will examine the effect of low-level light therapy on individuals with meibomian gland dysfunction. Eligible subjects will receive 15 minutes of low-level light therapy per week over a 3 week period. Meibum collected prior to treatment will be compared to meibum collected after 3 treatment sessions for alteration in protein and lipid composition.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
30
Visible red light (633nm) projected onto the face using an light emitting diode (LED) mask
The University of Houston College of Optometry
Houston, Texas, United States
Meibum protein composition
Proteomic analysis of meibum collected before and after low level light therapy
Time frame: 3 weeks
Meibum lipid composition
Lipidomic analysis of meibum collected before and after low level light therapy
Time frame: 3 weeks
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