Abstract: there will be slight fluctuations in blood pressure during blood donation. For those with high myopia whose fundus blood vessels are pulled thin, slight blood pressure fluctuations may cause fundus vasospasm and lead to retinal holes in the diseased retina. At this time, the liquefied vitreous will take the opportunity to enter the retina, causing retinal detachment and seriously affecting vision. Why can’t
high myopia donate blood? It’s good for people with high myopia not to donate blood, but many people feel very strange. In fact, this is right. If people with high myopia donate blood, it will increase the burden on their eyes. Since the degree of high myopia is not clearly specified in China’s blood donation standards, taking into account factors such as astigmatism, it is generally based on about 500 degrees in practice, It is not recommended that people with deep myopia (more than 500 degrees) donate blood.
high myopia cannot donate blood, mainly because it will affect the fundus blood vessels. Myopia belongs to abnormal refraction of the eye. Generally speaking, mild myopia (less than 300 degrees) has few complications, while high myopia has significantly longer anterior posterior diameter of the eye, but the retina and choroid cannot grow accordingly, As a result, the retina and choroid are elongated and diffuse atrophy, and the corresponding blood vessels become thinner. In this way, the blood vessels are very sensitive to the change of blood pressure. At the same time, the vitreous can change from colloidal to liquid. The blood pressure will fluctuate slightly during blood donation of
. For those with high myopia whose fundus blood vessels are pulled thin, the slight blood pressure fluctuation may cause fundus vasospasm, resulting in a hole in the diseased retina. At this time, the liquefied vitreous body will take the opportunity to enter under the retina, causing retinal detachment and seriously affecting vision. Therefore, from the perspective of protecting blood donors, people with high myopia should not donate blood. The incidence rate of eye diseases is high.
high myopia is a high-risk group of eye diseases.
high myopia patients will have these dangerous situations when donating blood. There are also many terrible complications: retinal detachment, vitreous body disease, glaucoma, macular hemorrhage and other eye diseases are all higher than those of ordinary people.