â¢ There are nearly 700,000 transgender individuals in the U.S., or 0.3% of the adult population. â¢ Of those who identify as transgender, a majority have taken some steps to transition from one gender to another. â¢ There are more than 8 million adults who identify as LGB in the U.S., or 3.5% of the adult population. â¢ An unknown number of transgender individuals also identity as LGB, so there is some overlap. â¢ Among adults who identify as LGB, bisexuals comprise a slight majority, 1.8% compared to 1.7% lesbian or gay.
Substances that cause an allergic reaction are called allergens. Reaction to allergens can cause your eyes to become red and irritated, prompting tear production, itching, and burning. The most common outdoor causes of allergic eye symptoms are grass, tree, and weed pollens.
Tear glands and tear ducts. Dry eyes are caused by a lack of adequate tears. Your tears are a complex mixture of water, fatty oils and mucus. This mixture helps make the surface of your eyes smooth and clear, and it helps protect your eyes from infection.For some people, the cause of dry eyes is decreased tear production.For others it's increased tear evaporation and an imbalance in the makeup of your tears.his mixture helps make the surface of your eyes smooth and clear, and it helps protect your eyes from infection. For some people, the cause of dry eyes is decreased tear production. For others it's increased tear evaporation and an imbalance in the makeup of your tears.