What Factors Affect the Inheritance of Color Blindness?
Hereditary color blindness is a genetic disease in which parents with color blindness pass the gene to their offspring through the chromosome.
Hereditary color blindness
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- Chinese name
- Hereditary color blindness
- Manifestation 1
- Red blind
- Manifestation 2
- Full color blindness
- Manifestation 3
- Blue yellow blind
- Manifestation 4
- Red green blind
- Hereditary color blindness is a genetic disease in which parents with color blindness pass the gene to their offspring through the chromosome.
- At present, the level of medical care is getting higher and higher, many diseases have been overcome, and only hereditary diseases ...
- Color blindness is a congenital, hereditary disease with more men than women. There are five ways to inherit color blindness:
- 1. The father is colorblind, the mother is normal, the born boy is normal, and the girl is a gene carrier.
- It is now generally believed that the color vision mechanism is three-colored at the level of the retinal receptors, and there are indeed three color-sensitive cones in the macular part of the retina, which are sensitive to red, green, and blue light, respectively. If one or two cone cells lack or have no effect, they will have partial color blindness; if all three cone cells have lack or promote the effect of color pigments, they will suffer from full color blindness; They suffer from weak color.
- One,
- Hereditary color blindness
- 1. To change the status of color blindness, it is necessary to improve the omentum pigment. The fundamental cause of color vision abnormality is caused by incorrect sequencing of genetic chromosomes and late eye diseases. 90% of color vision abnormalities are genetic hereditary color vision abnormalities. According to the latest research, the treatment of hereditary defects caused by modern medicine is still in theory at present, because the genetic inheritance of abnormal color vision only has hereditary defects and no heredity. Therefore, it also provides a theoretical basis for the treatment of color vision abnormalities in the medical community at this stage. Generally speaking, we only need to treat color vision abnormalities without changing genetic genes for the time being.
- 2. Can be targeted with red or green soft contact glasses to correct. Some people have tried acupuncture or Chinese medicine, which is said to have some effect, but it is still in the clinical research stage. Because color blindness and color weakness are inherited diseases that can be passed on to offspring, avoiding marriages between close relatives and investigating each other's family's genetic history before marriage, and taking measures to reduce the birth rate of color blind offspring can be an effective prevention measure. A few color vision abnormalities are also found in acquired people, such as certain fundus diseases, glaucoma, etc. The degree of color vision disorders caused by these eye diseases is mild and disappears with the recovery of the primary eye disease, so most of them have not attracted the attention of patients.
- 3. This thing is basically incurable, but it can wear a color defect of eyes (visual blindness). Due to the abnormal or incomplete photoreceptor pigments in the cone cells of the retina, it lacks the ability to distinguish one or several colors. According to clinical manifestations, it is divided into full color blindness and partial color blindness. The color cannot be discerned at all, and the perception that the object is only black and white and gray is called full color blindness or monochromatic vision. Often accompanied by a high degree of photophobia, frequent blinks, marked loss of vision, central dark spots, day blindness, etc. Losing the ability to discern a certain color is called partial color blindness. Among them, those who cannot distinguish red are called red or first color blind, and the red part is shortened in the spectrum, green is regarded as yellow, and purple is regarded as blue; those who cannot be distinguished as green are referred to as green or second color blind. Seen as gray or dark black; those who can't discern blue are called blue-blind or third-color-blind, and can only distinguish between red and green in the entire spectrum. Sometimes red-green-blind patients can show amazing color discrimination, which is derived from their life experience. They are distinguished according to the different saturation and brightness of red-green. However, when the color is mixed and tested, the color blindness is revealed. Nature. Most of them are congenital, and in order of frequency, they are green blind, red blind, blue blind, and full color blind. In the 20th century, Wilson proposed that color blindness is transmitted through the X-sex chain inheritance method. It is inherited by women. It is dominant in giving birth to boys and giving birth to girls without symptoms. Only when women are combined with recessive color blindness and color blind males, the daughters born are color blind. Therefore, the incidence rate is about 5% in men and 0.8% in women. There is no special treatment for congenital color blindness. Acquired color blindness is mostly caused by optic nerve disease and retinal and choroidal diseases. The former is mainly red and green blindness, and the latter is common with blue blindness. Different treatments can be given for the cause.
- Hereditary color blindness
- 4. Prevention: 1). Male color blindness will marry a normal woman, the son must be normal; daughter must be a carrier, so a boy should be. 2.) Normal male and female carrier are married, and their daughter has a 1/2 chance of being Normal, the probability of 1/2 is the carrier; the probability of the son is 1/2, and the probability of the 1/2 is color blind, so a daughter should be used. 3.) Female color blindness is married to a normal man, and the son must be color blind The daughter must be a carrier, so you should have a daughter. 4.) Male color blindness is married to a female carrier, the son has a 1/2 chance of being normal, and the 1/2 possibility is color blind; the daughter is 1/2 of the possibility For color blindness, the probability of 1/2 is the carrier. It is good for the boy. If the boy is normal, there will be no patients in his children. For girls, although the color vision is normal, as the carrier, her son may be Color blindness. 5.) Color match between male and female color blindness, tragedy must occur, whether it is a child or a female, color blindness must be affirmed. If it is an X-linked genetic disease patient or carrier, you can use the genetic doctor's diagnosis certificate to perform fetal gender identification Keep male or female fetuses.