Yoga has become a very popular form of exercise in the United States due to its health benefits. However, a new study suggests that certain poses increase eye pressure and present risks for individuals with glaucoma. Glaucoma affects eyesight, usually due to a build-up of pressure in the eye (called intraocular pressure, or IOP), which can damage the optic nerve. The study found that participants experienced a rise in intraocular pressure in four yoga poses, which included downward dog, standing forward bend, plow, and legs up on the wall. Study author Dr. Jessica Jasien writes, “As we know that any elevated IOP is the most important known risk factor for development and progression of nerve damage to the eye, the rise in IOP after assuming the yoga poses is of concern for glaucoma patients and their treating physicians. In addition, glaucoma patients should share with their yoga instructors their disease to allow for modifications during the practice of yoga.”
PLOS ONE, December 2015