Comment on: Magnesium Depletion Score Predicts Diabetic Retinopathy Risk Among Diabetes: Findings from NHANES 2005-2018.

I read the work by Yuan Chen et al. Biol Trace Elem Res 201(6):2750-2756 2023 entitled "Magnesium depletion score predicts diabetic retinopathy risk among diabetes: findings from NHANES 2005-2018" which was published in the Biological Trace Element Research (volume 201, issue 6, June 2023), with great interest. The authors specified that magnesium depletion score was associated with diabetic retinopathy. However, there are some limitations that should be addressed properly: first, the correct diagnosis of diabetic retinopathy; second, the consideration for statistical method; and third, the conclusion drawn from this study. I believe there are a few points regarding study design and conclusion that, if addressed, would improve the quality of this article.