What Causes Vision Distortions Along With Headaches?

SMALL TUMOR RUGHT REAR OF MY HEAD, NO CHANGE IN SIZE IN 3 YEAR. SUDDEN VISION CHANGES,NIGHT VISION AFTER 100 YARDS TAILIGHTS HAVE DISTORTED SHAPES. HAD EYE SPECIALISTCHECK IT OUT. NOTHING CAUSING IT AFROM THE EYES ITSELF. QUESTION CAN TU
MOR BE PUTTING PRESSURE ON THE VISION CNTRL CENTER N THAT PART OF THE BRAIN CAUSE THESE DISTORTIONS AND HEADACHES.