Lupus can cause serious problems in the eye including optic neuritis and vasculitis. They could respond to steroids and make your vision better. It is very important for you to see an Eye MD ophthalmologist in the very near future.
JCH MD
I've recently used steroids prescribed after a trabeculectomy, or filtration surgery to relieve eye pressures. While the operation produced good eye pressures, I've had a noticeable dulling of the eye that was operated on. Several people I know who also had steroid drops prescribed have found dulling or blurring of vision. One said she had to wait many months before the vision returned to her baseline, once she quit the steroid drops. Use of steroids around and in the eyes is said to be tricky because of the steroids potential effect on the optic nerve. I'd have the eye doctor do a pressure test, field test and an OCT of the optic nerve if I were in your position, just to be sure.