Does high myopia blood donation have an impact?

High myopia blood donation, there is a certain impact. Mainly consider high myopia, blood pressure fluctuations, may cause retinal hemorrhage or detachment. Because high myopia, its eye axis is longer than normal, retina is thinner, thin blood vessels, especially in the peripheral part of the retina easy to show degeneration area. Blood pressure fluctuations, will cause retinal small blood vessel rupture bleeding, and peripheral retinal degeneration area shows a hole, thus causing retinal detachment. Therefore, for those with high myopia, that is, those with myopia degrees greater than 600 degrees, blood donation is not advocated.