I have been using the herbal eyebright remedy for the same reason (corneal scarring due to the herpes virus). I have only been using it for about a month and so I am not sure if it has or will make a difference.
I am determined to try it for a while though as it seems to be the only natural option available to me.
I can't imagine having a corneal transplant. Have you considered this option?
Have you found that the remedy has helped you? Are there any other recommendations you have found to be helpful?