Field vision test normal. 30% optic nerve damage. is glaucoma in early stage?

Optic Neeve Damage: Read===>http://www.Localhealth.Com/article/optic-nerve-damage. As you see, there are a variety of causes of damage to the nerve, including glaucoma. I would consult an ophthalmologist as soon as possible for a comprehensive evaluation and a treatment plan for whatever turns out to be the underlying condition.

Yes: Need more information. Who and how did they claim or detect 30% optic nerve damage? If field is normal, that is a good sign( how did they test this or make that claim?). You need to see an ophthalmologist.