How Can Papilloedema In The Left Eye Be Treated?

Hi, I have been diagnosed with a papilloedema in my left eyeand the only treatment is surgery because I had a radiotherapy because of a meningioma located on my optic nerve which caused my cecity : no vision right eye. the MRI in July concluded no extension of the meningioma size . My vision field , left size seems to show a slight change. I do not want to have this skull surgery because despite the meningioma size is stable the neurosurgeon wants me to agree for open surgery and he indicates me that it won t necessary help to improve my sight in my left eye which is actually good and I might have consequences like walking disorders after this surgery I avoided by having the radiotherapy in 2011. I am so desperate, what do you think ? Elisabeth FRANCE