Is it safe for my 84-year old mother to have surgery for glaucoma. has glaucoma but otherwise in good health.

Yes: If surgery is indicated to help treat her glaucoma and preserve her vision it is safe because of her age and health (age is not a contraindication). As with any surgery, there is associated risks. You should discuss this and her options with her eye md or glaucoma specialist.

Yes: There are almost no medical problems that would prevent this type of surgery.