Cynthia is 91 years old. her optic nerves have got damaged due to buildup of fluid in the eye. the doctor has told her that her condition can be treated with eye drops. the disease that has impaired cynthia's vision is:

The disease that has impaired Cynthia's vision is glaucoma. Glaucoma is a disease that damages your eye's optic nerve, it usually happens when fluid builds up in the front part of your eye. This causes an increased intraocular pressure, in which damage to the eye optic nerve can lead to loss of vision and even blindness. It is the leading cause of irreversible blindness in the world.