Marijuana Linked to Early Gum Disease. Feb. 5, 2008 -- Gum disease is widely considered a disease of aging, but that may not be true for young adults who smoke marijuana on a regular basis.
Your third eye is located in the center of your forehead. It is the site of the ajna chakra, which is associated with light, perception, and intuition. Chakras can become unbalanced when they are blocked, which may cause a person to feel like the areas influenced by that chakra are not working properly.
Besides myopia (nearsightedness) and hyperopia (farsightedness), the third major category of refractive error is called astigmatism. This blur results from a cornea that is not perfectly spherical in shape. The cornea is the optical window of the eye and should be perfectly spherical-just like a camera lens. The back of a spoon is oblong instead of spherical and illustrates a shape that has astigmatism.