Hi welcome to the boards though sorry about your health problems.

I am not an expert in knowledge like many here but will offer a few thoughts. Burning pain is common with neuropathy. Also I was told by my neuro when my condition spread that spreading can be common from one limb to another.
As for the glaucoma is there anyway you can go back for the appointment like maybe the doctor will work on a payment plan? I thought you can go blind from untreated glaucoma so that is my concern. I have a lot of eye problems that though is not one of them. It is very hard to find a doctor to connect the neuropathy and the eyes.

What type of bloodwork have you had? B 12,low D levels can impact fatigue and also cause pain etc. On this forum there is a supplement board that offers could info about vitamins etc.

Hope you feel better