Answer.) While glaucoma cannot be cured, it can generally be controlled with early treatment. Medicines may be used as part of the treatment. Some drugs stimulate the eye to produce less fluid, while others assist the fluid drain from the eye, lowering pressure. You can't cure glaucoma, but you can slow its progression. Untreated early-onset glaucoma can take up to 15 years to progress to blindness if left untreated. If the pressure in the eye is excessive, however, the disease will progress more quickly.