Glaucoma is an eye disease that usually affects people over the age of 45. An estimated one million people in France are affected. It is hereditary. Glaucoma is often linked to a rise in intraocular pressure. This causes damage to the optic nerve and the visual field. Some patients suffer from glaucoma even though their pressure is normal. In these cases, only a specialist in this pathology, such as Dr Stéphanie Zwillinger, can carry out an appropriate screening.