Thyroid eye disease, which can restrict eye movement People with strabismus due to fourth nerve palsy have weak superior oblique muscles in the eye. They may not be able to look up or down.

"Bell's palsy is an unexplained episode of facial muscle weakness or paralysis. It begins suddenly and worsens over 48 hours. This condition results from damage to the facial nerve.

Bell’s palsy, also known as peripheral facial nerve palsy, ... “I challenge somebody to notice that someone is blinking less in one eye than the other,” he said.

NSW MP Victor Dominello has said he has Bell’s palsy, after appearing at a press conference this week with what he described as a ‘droopy eye’. So, what is Bell’s palsy and how is it treated?