The contacts had small teleprompters on the inside of them so he can be fed answers to questions.
Perhaps he has mild cataracts and was wearing the dark contact lenses to dim down the very bright stage lighting. I have mild cataracts which have improved from more serious cataracts from two years ago. Then I would walk outside in the afternoon facing west to go to the store and the entire area in front of me was all blinding glare. Now after taking strong supplements for 2 years when I walk out at the same time, there is a glare spot about 10% of the area in front and I can see all the surrounding area. I am 82.
Black data display contact lens, very interesting idea. Some of us suspected he had cocaine eyes, eyes dilated with cocaine or other drugs.
