Anatomy. The lateral collateral ligament (LCL) is a one of the four major ligaments in the knee. The LCL is on the outside of the knee connecting the thighbone (femur) to the smaller bone in the lower leg (fibular). Its main function is to avoid varus stress across the knee (where the knee buckles outwards).
49 Responses to âPSA: LED-Backlighting Can Cause Migraine Headachesâ. 1  They should responsible to customer health. 2  Regarding eye strain and headache due to led backlightâ¦. 3  I am sensitive to both flicker and fluorescent light.  There appear to be lots of posts on the internet regarding screens that cause migraines.
Migraines and Vision Problems. Roughly 20% of migraine headaches are preceded by an aura. The aura often includes visual symptoms. Vision problems usually appear 20 minutes to one hour before the headache starts. They may include blind spots or the appearance of flashing lights, spots of light, or wavy lines in the field of vision.