Hi. I'm online and happy to answer your question today.
Do you have any medical problems or take any medicine?
Is it like a dimmer switch, slowly going to totally lights out blindness, that then suddenly comes back to mostly normal?
And, just to make sure I understand, it occurs in both eyes at the same time. Correct?
Are you there? The system shows that you are in the chat room, but I can't see anything you may be typing.
I think the chat system has frozen up. We can use the Q&A system to answer your question and "text message" back and forth to each other.