Evaluation of the role of thyroid hormones, vitamin B12, vitamin D3, folic acid and ferritin serum levels in pterygium development.

To evaluate the relationship between pterygium and serum thyroid hormone, vitamin B12, vitamin D3, folic acid, and ferritin levels between pterygium patients and control and to assess its correlation with clinical findings. 18-65-year-old 100 pterygium patients and age and sex matched 60 healthy control subjects were included. The peripheric blood sampling results were investigated.