Live healthy, avoid contact sports, protect your eye from heavy sun exposure, eat a good diet, see an ophthalmologist yearly or if problems, even among high myopes the risk of RD is less than 1 in a thousand, of course for normal eyes about 1 in 8-10,000. Get on with your life and don't obscess on this. Eat a good diet, fruits, vegetables, fish, berries, nuts. Don't get obese and avoid processed sugars.