Dr Ick says,
You haven't been eating enough greens!
Your syptoms are those of a Vitamin B12 Neuropathy. Your nervous system is currently degenerating at a rapid rate thus causing the loss of peripheral sensations and visual acuity. It is possible without rapid treatment your condition could worsen thus rendering you a jibbering cabbage for the remainder of your life. The only way to overt your impeding deterioration is a rapid i.v. infusion of a vegetable with a high vitmain B12 content such as spinach, brocoli or runner beans.