Prayer for the Healing of My Mom Diabetic

Pray for my Mom. Her eyes are getting blurry. She is a diabetic person. The doctor said this is one of the reasons why his vision is blurry. We have done everything on his diet and follow check-ups every month, but nothing has changed yet.
Pray that the Lord will heal him and help him to cure his diabetes. I know nothing is impossible with God. I will always trust and believe in the Lord to heal my Mom.
Thank you so much!