Are these symptoms B12 deficiency?

Hi, last month i have suffered some nerve pains in my limbs - got tested for b12 - it was 260 pg/ml, doctor told me everything was fine. It eventually passed, but now I am getting double vision (after long physical activity or screen time), often floaters/sparks in my vision or weird electric/burning pains in my head. Is this caused by a deficiency? Thank you