It is a disease characterized by progressive destruction of the optic nerve over time.

The patient may not realize his disease at first. It usually does not cause pain or any other symptoms. However, in very advanced stages, the patient walks by bumping into objects around him. The visual field narrows.

The reason why it is called glaucoma is because the biggest risk factor is increased intraocular pressure, that is, increased eye pressure. Therefore, those with a family history of glaucoma and those with hypermetropia are at greater risk.