hi, it is possible that the long course of levaquin that you used might have caused optic atropy, however, it can not be told with certainity. levaquin is known to produce peripheral nerve damage especially on long term use, and optic nerve damage has only been reported very rarely. A board of research is required to confirm levaquin as cause of optic neuropathy. you may consult an opthalmologist for further details. hope this helped.