This study, executed by researchers from Bahrain, evaluated the prevalence of vitamin D deficiency in patients with type 2 diabetes mellitus and its relationship with the severity of diabetic retinopathy, an eye disease caused by high glucose (sugar) levels. 300 patients with type 2 diabetes were divided into three groups: no diabetic retinopathy, non-proliferative, and proliferative diabetic retinopathy. Subsequently, vitamin D levels were measured and classified into three groups: normal, insufficient, and deficient. The results showed that low vitamin D levels and vitamin D deficiency were common in these patients. A significant decrease in vitamin D levels was observed with the advanced stages of diabetic retinopathy; lower vitamin D levels in the blood were associated with more severe diabetic retinopathy. Further details can be found in the study.
Almoosa et al.