Left side lumbar eye pain may be caused by lumbar disc herniation, lumbar muscle strain, lumbar spondylolisthesis and so on. 1. Herniated lumbar intervertebral disc: usually manifested as radiating pain, the pain sensation spreads from the lumbar region to the back of the buttocks, the back of the thighs and other parts of the body, so the patient is likely to have left-sided lumbar eye pain. 2. Lumbar muscle strain: refers to the lumbar tissues due to chronic injuries occurring in the inflammatory lesions, manifested in long-term and recurrent soreness or swelling of the lower back, not sedentary and standing for a long time. 3. Lumbar spondylolisthesis: refers to the human body on the vertebrae relative to the lower vertebrae for slippage, usually manifested in the lower extremities launch pain, numbness, unilateral or bilateral lumbar pain and other symptoms. The left side of the lumbar eye pain may also be caused by other reasons, it is recommended that patients go to the hospital in a timely manner, after clarifying the cause of the disease, under the guidance of the doctor for corresponding treatment.