My mother has glaucoma, her father and grandfather also had glaucoma. I am screened yearly for it because of family history but, thank goodness, my screens have come out good so far. On the other side of my family, my paternal uncle who has type 1 also has retinopathy. He has had laser surgery several times now. I am screened every 6 months for retinopathy because I have diabetes. So, the two conditions are different but one individual can be affected by both.
Glaucoma is increased fluid pressure in your eye. Diabetic retinopathy is change in the blood vessels and nerves in your eye. Both can result in vision loss. Both can be monitored and treated and while a legitimate cause for concern are not a dire diagnosis. They can be managed-do not despair!