I saw my neuro o yesterday . i have meningomia tumor on the ocularmotor. she said it has weaken a minimal can this cause me to go blind ?

Unlikely: Meningiomas are benign tumors, will give symptoms due to pressure in critical areas of brain, current surgeons are highly trained professionals have great skills , and modern equipment will remove with minimum complications, speak to the neurosurgeon before coming to occlusion. Good luck.

Yes and no: This depends on the location of this mass and how rapidly it is growing and what treatment may or can be done.