If zoloft (sertraline) caused eye pain/visual problems, would switching to another ssri relieve symptoms. 3 months of head numbness at 100, down to 50 still no rel?

See a neurologist: I would recommend you consult with the neurologist and an ophthalmologist. These symptoms should not be occurring with zoloft (sertraline).

Yes it's possible: I'm assuming you had an eye exam to rule out any organic cause for your eye pain and vision changes. That would be a top priority. Otherwise, yes different antidepressants work differently, you could be more tolerant of a different one. You need to discuss it with your doctor.