What is the reason of eyeground cherry erythema?
summary
Winter is a very beautiful season. For all of us, maybe everyone will fall in love with winter. Then, when winter comes, we may get some diseases, but we don't know much about the diseases caused by cherry erythema. Today, how to cause cherry erythema, Let's talk about how cherry red spots in the fundus of the eye are caused.
What is the reason of eyeground cherry erythema?
The blood supply of fundus artery is often interrupted. Senile fundus arteriosclerosis is a common chronic fundus vascular change in the elderly over 60 years old. It is mainly manifested as thinning of fundus artery, decreased transparency, pale color, strong reflection, straight blood vessels, branches into sharp angles and so on. It is a manifestation of aging. There is no need to be nervous for people with senile fundus arteriosclerosis, because it generally does not cause blindness.
The disease is autosomal recessive and is more prevalent in Jews. It has been confirmed that type A and type B of the disease are caused by lack of sphingomyelinase. It is widely found in lysosomes, mitochondria and microsomes, especially in liver cells. Sphingomyelin is found in all cell membranes and subcellular plasma membranes, including the matrix of red blood cells.
The retina is turbid and edematous, especially in the posterior pole, but in the fovea, the deep choroid can be seen to reflect orange red. Against the background of the surrounding gray edema, cherry red spot is formed. Another case is the systemic disease on the basis of fundus arteriosclerosis. Because the fundus vascular abnormalities also reflect the abnormal changes of the systemic vascular system, such as atherosclerosis, hypertension, diabetes and other patients, in addition to the corresponding systemic symptoms, often combined with fundus retinal artery thinning, straightening, showing copper or silver wire like changes, and can be seen at the intersection of sclerotic artery and vein compression vein, called cross compression.
matters needing attention
If there is already a child with this disease, 50% of the pregnant fetus may suffer from this disease. Therefore, prenatal enzyme activity test should be carried out for the fetus, and artificial abortion should be carried out if necessary.
