Glaucoma in the right eye does not usually affect the left eye. Often in primary glaucoma, both eyes may develop sequentially, but not because one eye affects the other. Secondary glaucoma, such as traumatic glaucoma, on the other hand, develops predominantly in one eye.
There are several different types of glaucoma. Primary glaucoma, such as primary closed-angle glaucoma and primary open-angle glaucoma, usually develops in both eyes, but it is possible for the onset to be sequential. When one eye develops, it is important to pay close attention to the health of the other eye and have it examined regularly, as it is likely that the other eye will develop as well.
Secondary glaucoma caused by trauma usually affects only one eye and does not cause the other eye to develop.
Glaucoma should be treated as soon as possible to avoid delay and adverse effects.