When ligaments are damaged, the knee joint may become unstable. Ligament damage often occurs from a sports injury. A torn ligament severely limits knee movement, resulting in the inability to pivot, turn, or twist the leg. Surgery is an option to repair a torn ligament if other medical treatment is not effective. There are 4 major ligaments in the knee. The ligaments in the knee connect the femur (thighbone) to the tibia (shin bone), and include the following: Anterior cruciate ligament (ACL).
Cataracts often form slowly and cause few symptoms. When symptoms are present, they can include: 1  Vision that is cloudy, blurry, foggy or filmy. 2  Sudden short sightedness. 3  Changes in the way you see colour, especially yellow. 4  Problems driving at night because oncoming headlights are distracting. 5  Problems with glare. 6  Double vision.
How Cataracts Affect Your Vision. In a normal eye, light enters and passes through the lens. The lens focuses that light into a sharp image on the retina, which relays messages through the optic nerve to the brain. If the lens is cloudy from a cataract, the image you see will be blurry. Other eye conditions, such as myopia, cause blurry vision, too, but cataracts produce some distinctive signs and symptoms.