UVC is absorbed by the ozone layer and has the highest energy UV rays which make them the most harmful to your eyes. Scientists have shown that many forms of eye cancers might be caused by lifelong exposure to the sun and its harmful radiation.
Thoracic strain/sprain. What is a strain/sprain of the thoracic region? The thoracic region describes the vertebrae in the middle of the spine and is often referred to as the mid back. Technically speaking it runs from the base of the neck to just below the rib cage. A strain is when a muscle is overstretched or overloaded to the point where the muscle fiber fails or tears. A sprain is when a ligament is overstretched or overloaded to the point where the ligament fails or tears. Strains and sprains are common in the thoracic region of the spine.
1 Joint Dysfunction. 2  Pain caused by joint dysfunction, where the ribs attach to the spine at each level of the thoracic spine, can cause pain. 3  Herniated or degenerative discs. 4  While less common in the thoracic spine, degenerative disc disease or a thoracic herniated disc can be a source of pain.here are several features of the thoracic spine that distinguish it from the lumbar and cervical spine: 1  Limited flexibility. 2  The ribs connected to T11 and T12 at the bottom of the thoracic spine do not attach the sternum in front, but do provide protection for the kidneys in the back of the body.