@gocy Hello there. I'm sorry to hear you are not getting any help. Perhaps you should be seen by a neuro opthamologist, or a neurologist? Your current opthamologist should not have a problem referring you to a specialist if he or she can not properly diagnose.
There may be mitigating circumstances such as nerve pain that ironically came after your cataract surgery. It may unrelated to the surgery, but ruling out is the only way to tell. Neuritis or neuralgia can be helped with a nerve medication such as Gabapentin (Neurontin) or Pregabalin (Lyrica).
I experienced sharp nerve pains in my eyes and because I had had cataract surgeries and cornea transplants, I blamed it on that. when in fact I had developed small fiber neuropathy and central sensitization. The only way I got to the bottom of things was to keep persevering and being my own advocate.
Good luck with resolution. I'm sure it will all work out, and I'd love to hear an update. Will you keep me posted on your progress?