The Dry Eye Zone

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Abstract: ELF MF and dry eye

Help! Calling electricians and engineer types with dry eye. I am ignorant as a stone about this and need a brief education.

Percolating at the back of my brain somewhere is an evolving composite answer to the question of "Why we are dry" - epidemiologically speaking. Many, probably most of the pieces are known but I am always on the lookout for additional clues. And yes, I know this study is just 15 rats for 7 days but it's suggestive and I'd like to get some sense of the potential relevance.

My question: Where do normal people typically get exposure to ELF magnetic fields?

The effect of extremely low frequency magnetic field on the conjunctiva and goblet cells.
Keklikci U, Akpolat V, Ozekinci S, Unlu K, Celik MS.
Curr Eye Res. 2008 May;33(5):441-6.

PURPOSE: The aim of this study was to examine the effects of extremely low frequency magnetic field (ELF MF) on the conjunctiva and goblet cells density.
METHODS: Thirty adult female Spraque Dawley rats were assigned to one of two groups, each containing 15 rats. The experimental group received magnetic field 4 hr/day for 7 days. The second group received standard laboratory care and served as a control. The specimens were evaluated by light microscopy for goblet cell density, conjunctival edema, inflammation, and fibroblast proliferation.
RESULTS: In ELF MF exposure group rats, the number of goblet cells was less than the control group. We also observed a significant difference between ELF MF exposure group and control group in terms of goblet cell density (p = 0.010). The ELF MF exposure group manifested conjunctival edema and inflammation compared to the control group (p < 0.001 and p = 0.003). There was no statistical difference between the groups for fibroblast proliferation (p = 0.422).
CONCLUSION: This study suggests that ELF MF exposure leads to morphological alterations of the conjunctiva and reductions in the number of goblet cells. We believe that ELF MF may cause dry eye symptoms.
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