Who is at risk of glaucoma?

Well, anyone really. But it's more likely if you have a family history of it, if you're over 60, if you are of African origin and it's more likely if you have diabetes. 

Approximately 5% of people over 65 have glaucoma. 

Here are some links to useful information.

https://www.rnib.org.uk/eye-health-eye-conditions-z-eye-conditions/glaucoma