In a recent study, it has been found that people residing in places with higher amounts of fine particulate matter pollution were 6 per cent more likely to suffer from glaucoma than those in the least polluted areas. The study was published in the journal, 'Investigative Ophthalmology and Visual Science, 2019.' Glaucoma is the leading cause of irreversible blindness and affects over 60 million people worldwide. It most commonly results from a build-up of pressure from fluid in the eye, causing damage to the optic nerve that connects the eye to the brain. Glaucoma is a neurodegenerative disease.