Multiple choice general knowledge A spell that causes the eyes to blinded, burning and red Petrificus Conjuctivitis Confundus Riddikulus Reveal answer Fill a bubble to check yourself B Correct answer Explanation In the Harry Potter universe, the Conjunctivitus Curse is a spell that causes great pain to the victim's eyes, causing them to swell shut. Petrificus Totalus paralyzes, Confundus causes confusion, and Riddikulus is used against Boggarts.