Our eyesight can be affected my many factors, including what we eat, according to research.In the study, carried out by Fight for Sight, 78 per cent of Brits said that their sight was the sense they were more scared of losing.Fortunately, there are ways you can protect your eyesight - reports The Express.These include having regular eye tests, not smoking and eating a healthy, balanced diet.Your diet can help keep your vision strong, reducing the risk of developing serious conditions that can threaten your ability to see.There are some foods in particular that can give your eye health an extra boostBecause fish is rich in Omega-3 fatty acids, it can help keep your retina healthy and improve your eyesight.Some studies have also suggested