A lumbar sympathetic nerve block is a special test to help your doctor find the cause of your symptoms. During the test, an anesthetic (numbing) medication is injected near your spine. This âblocksâ the sympathetic nerves in that region.
Lutein is an antioxidant carotenoid a pigmented nutrient that is responsible for the yellow colors of fruits and vegetables and is present in the highest quantities in dark, leafy green vegetables. You're born with a certain amount of lutein in your eye, but your body doesn't reproduce it.
Research has also shown that lutein can lower risk of cataracts. For example, one study found that older women who had the highest levels of lutein (and zeaxanthin, another nutrient that is critical for vision health) were about a third less likely to have cataracts.esearch has also shown that lutein can lower risk of cataracts. For example, one study found that older women who had the highest levels of lutein (and zeaxanthin, another nutrient that is critical for vision health) were about a third less likely to have cataracts.