Abstract
Purpose
To evaluate conjunctival surface cells and tear-film functions in cases with vitamin D deficiency.
Methods
Thirty-six patients with serum vitamin D deficiency and 27 control subjects with normal serum vitamin D levels were included in this prospective study. The tear break-up time (TBUT), Schirmer II test, and conjunctival impression cytology tests were performed to all participants.
Results
The mean serum vitamin D levels were 10.5 ± 5.0 µl in the study group and 33.9 ± 11.7 µl in the control group (p < 0.001). The median TBUT scores were 11 s and 17 s and the median Schirmer II values were 7.5 mm and 12 mm in the study and the control groups, respectively (p = 0.003, p = 0.049). According to the Nelson staging system, 69.4% of the patients in the study group had grade 2 or 3 impression cytology, whereas 18.5% of the participants in the control group had grade 2 or 3 impression cytology (p < 0.001).
Conclusion
Our study results showed that vitamin D deficiency may lead to dry eye causing conjunctival squamous metaplasia and loss of goblet cells on the ocular surface.
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Acknowledgements
We would like to thank Nursel Doğan, who is a clinical nurse in our department, for her assistance in the study.
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Dikci, S., Akatlı, A.N. & Yıldırım, T. Conjunctival impression cytology and tear-film changes in cases with vitamin D deficiency. Int Ophthalmol 40, 1687–1694 (2020). https://doi.org/10.1007/s10792-020-01336-1
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DOI: https://doi.org/10.1007/s10792-020-01336-1