Hi, floaters at this age is uncommon. But if you got also there is no need to worry about it much. Generally they will reduce at a pace on their own. Hydration for everyone of us is must. Increase the intake of water and eat magnesium and zinc rich foods like nuts etc helps. Vitamin 'C' rich foods like oranges and kiwis help them treat naturally. Avoid reading and watching/playing in mobile phones in dull light. Avoid exposing yourself and contact with harmful radiation. Do brisk walk and eye relaxation exercises and meditation to heal naturally.