Sleep at 30 degrees if you have severe glaucoma: - Counseled for severe glaucoma that responds poorly to standard therapy: sleep propped up on a couple of pillows at a 30-degree angle - Only if you can sleep that way. A full night of sleep matters more for your whole health than the 30 degrees - Which side you sleep on probably doesn't matter. Some studies found the lower eye worse, others found the higher eye worse - On video, people toss and turn all night, so each eye spends about the same time down Dr. Jeffrey Goldberg on @hubermanlab