I told you before I have not had any experience treating this and therefor can offer no further insights. A cornea specialist can answer these questions during a consultation.
With all due respect, this is not true. The causes of corneal neuropathy are refractive surgery (LASIK, PRK, FEMTO LASIK, LASEK, etc.), dry eye disease, Sjögren’s Syndrome, neuralgia associated with a herpes virus, benzalkonium chloride (BAK) preserved eye drops, accutane, chemotherapy, and radiotherapy. A patient with corneal neuralgia has no corneal staining, no visible symptoms of the slit-lamp. A patient with neurotropic keratitis most often has some sort of staining in the first stage, and epithelium defects in stages 2, and 3.