Study: (Lab science) Thyroid and dry eye

Influence of Thyroid Hormone on Thyroid Hormone Receptor {beta}-1 Expression and Lacrimal Gland and Ocular Surface Morphology.
Invest Ophthalmol Vis Sci. 2007 Jul;48(7):3038-42.
Dias AC, Módulo CM, Jorge AG, Braz AM, Jordão AA, Filho RB, de Paula JS, Rocha EM.

CONCLUSIONS: Chronically reduced levels of TH lead to biochemical and structural changes and modulate the levels of Thrb in LG. These events confirm that LG is a target organ for TH and may facilitate understanding of the mechanism related to dry eye in hypothyroidism.

Looking forward to some follow-up studies on this one.