This type of glaucoma may not respond to some common glaucoma medicines, and surgery may be needed. Occasionally, nerve damage occurs without high pressure in the eye. Using your eyes for close work or in poor light does not increase your chances of having glaucoma. Open-angle glaucoma gets worse gradually if not treated. Usually it affects both eyes.
Blind spots occur first in side vision.
Later, central vision may be affected. Vision loss is permanent because the damaged nerve cells cannot return to normal. However, treatment can prevent more damage and loss of vision. Open-angle glaucoma often causes no symptoms in the early stages. In later stages, you will begin to notice a loss of vision.