1. because you had neuralgia
[stated in history], thus damage to the optic nerves as a result of nerve block
can be a precipitating factor, have a MRI
of the orbitals to make sure nothing is pressing on the nerve.
2. As condition is Acute,your Doctor might prescribe you Steroid
[prednisolone] which helps in bringing down the swelling.
3. Once optic nerve gets damaged and there is nothing a Doctor can do can do, seek immediate neuro-ophthalmologist opinion and examination.
4. It is particularly important to have these symptoms evaluated.