I like to invite you to read our recent paper focused on findings about peripheral organs that are mirrored in brain of a person with diabetes. This includes retina, heart, and kidney. Will be happy to hear your feedback:
Link: https://www.springermedicine.com/diabetic-retinopathy/diabetic-retinopathy/association-between-cerebral-lesions-and-the-severity-of-diabeti/51029192