Glaucoma is a common eye disease that damages the optic nerve and thereby the field of vision. In the most serious cases, glaucoma can lead to blindness.
Older people admitted to hospital, even those who can walk unaided by themselves, spend most of their stay in bed. But this level of inactivity can cause - post hospital syndrome.
This is despite some using cannabis every day of the year and others having mental health problems, according to a study of more than 17,000 people aged 50 and over in the US.
