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Why are my eyes single eyelid and double eyelid?
In the process of reproduction, organisms will produce offspring similar to themselves, that is, as the saying goes, "as you sow, you reap." What organisms pass on to their offspring is not specific traits, but genetic information (genes). Genetic information is contained in genetic material (that is, deoxyribonucleic acid, short for DNA; Or ribonucleic acid (RNA for short) Therefore, in essence, heredity refers to the phenomenon that genetic material is passed from the previous generation to the next generation. If the father is color blind, the daughter can have normal color vision, but she got the color blindness gene from her father and passed it on to her son, making him color blind. Therefore, in terms of personality, the father suffers from color blindness and the daughter does not, but in terms of genetic information, it is passed down from generation to generation, from father to daughter, and then from daughter to grandson. So it can be said that color blindness is hereditary. However, no two identical creatures, even twins. Parental traits remain relatively stable only in offspring. Descendants and parents will never be exactly the same. The difference in traits between offspring and parents and between individuals in offspring is called variation, which is also the saying "one mother gives birth to nine children, and nine children are separated". There are genetic variation and non-genetic variation. The former refers to the change of genetic material, such as gene mutation and chromosome aberration, while the latter is the result of environmental influence. Heredity and variation are common phenomena in biology and one of the basic characteristics of life activities. With the application of new theory and technology of praseodymium physiology and biochemistry, people's understanding of genetic variation is from macro to micro, from whole, cell to molecular level. People's in-depth understanding of the reproduction, transmission, expression, regulation and change of genetic information is of great significance to the practice of animal and plant breeding, the diagnosis and prevention of human genetic diseases, the continuation and health of human race.

In short, it is genetically determined. If you want to change the shape of your eyelids, you can have plastic surgery. Q: I really want to be double eyelid surgery, but I'm afraid. Did it hurt during the operation? Is there any sequela, will it affect your eyesight?

A: Everyone who has an operation will have your fears and worries. In fact, double eyelid surgery's blepharoplasty only hurts a little when it is injected with anesthetic, but the anesthetic takes effect in less than one minute and can last for 2-4 hours, and it doesn't hurt during the operation. Complications may occur in every operation, but as long as the doctor is well trained and strives for perfection, you can generally avoid them. Because double eyelid and pouch operations are all extraocular operations, which do not hurt the eyeball and generally do not affect vision, but sometimes there will be swelling and irritation after surgery, which will lead to fear of light and tears, and the vision will be blurred in a short time, but with the swelling after surgery, it will soon return to normal.

Q: I want to have pouch surgery. I don't know how many days to rest before I can go to work. How long is the wound not obvious?

Answer: Generally speaking, you only need to rest for 3-5 days for pouch surgery or double eyelid surgery. Because the swelling is heavy on the second day after operation, it is easy to cause eye fatigue and tears, so use your eyes as little as possible, but you will get better on the third day and you can see things and work normally. At this time, although the stitches have not been removed yet, it will not affect your work, but we still suggest that you rest for two or three days. The wound will not be obvious in a month or so. The wound (incision) of double eyelids may take a little longer to become inconspicuous.

Q: I have a double eyelid in one eye and a single eyelid in the other. Can I make one?

A: In your case, you usually have to do it with your eyes together, because Director Wang is doing a comprehensive eye plastic surgery. First of all, we should design the radian and shape that suits us according to our face and eye basic conditions, then remove excess fat and loose skin, and finally let the eyelashes curl up by sewing. If you only have one eye, then this eye will be asymmetrical with the other eye, because it has redesigned the radian and shape, removed excess fat and loose skin, and the eyelashes are upturned, making the eye the most symmetrical. But if you insist on making one eye, and that double eyelid looks good, you can make the other one according to the shape of this double eyelid, but there will always be subtle differences between artificial and natural. In addition, when you decide to make eyes, you must be fully prepared and wait patiently for this artificial double eyelid to reduce swelling. It will take a while for the eyes to be symmetrical.

Q: I heard that there is a way to remove bags under the eyes without surgery. What is the difference between this method and the original surgical method?

A: The propaganda method of removing eye bags without surgery is actually to make a small incision in the conjunctiva (lower eyelid) with a special electric knife or laser of electrocoagulation device to remove the orbital fat, eliminate the eye bags and leave no scar on the outer eyelid. However, this method is suitable for young people with tight lower eyelid skin, but there will still be some relaxation after fat removal; We do not recommend this method. It is best to choose the incision on the eyelid skin, remove the excess skin and tighten the local tissue while removing the orbital fat, so that the thick wrinkles around the eyes disappear.

Q: I want to make bags under my eyes, but many people advise me to be cautious because I am worried that my eyelids will turn out. I want to know, is this often the case after pouch surgery?

Answer: The pouch surgery is the most delicate in plastic surgery, which requires the surgeon to accurately judge the excess amount of eyelid skin, so as to eliminate the most obvious fine lines and tighten the loose skin without affecting the eyelid edge position and eyelash direction. A little careless cutting of the skin will cause what you call eyelid ectropion, which will lead to bleeding and other eye diseases. However, sometimes the resection amount is appropriate and the local swelling is serious, which will cause temporary eversion. This condition will recover after the edema subsides. In short, pouch surgery would rather be conservative than excessive, so as not to recover. Experienced cosmetic surgeons will ensure that this rarely happens.

Q: Why do some people have obvious scars after double eyelid or pouch surgery, while others are obvious?

A: Whether the scar of eye surgery is obvious is related to the following factors. First, it is related to the fine operation of the surgeon. Fine needle, fine thread, minimally invasive technology, scars are naturally not obvious; The second is the patient's own physique. If the reaction to suture is heavy, the scar will definitely be obvious; The third is that patients and doctors don't cooperate well, don't care about the incision, don't know the precautions, the wound is infected, and the scar will of course be obvious. In addition, it is also related to the local activity of the wound. The scar on the active part is naturally obvious. For example, the scar on the upper eyelid is more obvious than the scar after the lower eyelid surgery.

Q: I want to make a pair of European double eyelids. Do you agree? What kind of double eyelids are European eyes? A: When you say European double eyelids, you actually mean parallel double eyelids. You can see double eyelids from the inner corner to the outer corner. The real European double eyelids are different from this one, because Europeans have high eyebrow arches and deep eye sockets. When they open their eyes, the upper eyelids retract into the eye sockets, forming deep double eyelids. If your face is round or oval and has a soft oriental appearance, it is not suitable for this style of double eyelids.

Q: I have a daughter with a single eyelid. How old do you think she is to have double eyelids?

A: I don't think little girls should be too anxious to have double eyelids. They can wait until 12- 13 years old when their facial features are more stereotyped, so that their children can bear it psychologically, and they will not feel inferior and think that their eyes are not as good as others. Of course there are exceptions. Some children pay attention to their looks too early and ask for double eyelids. Doctors can also help her, but the design and operation methods of double eyelids are slightly different from those of adults, and the effect is good.

Q: I had pouch surgery this time, and I don't need to do it again. Can it be operated for life?

A: Bags under the eyes are one of the signs of aging. With the increase of age, the constant change of local tension and the lack of rest and sleep, bags under the eyes can reappear on the flat lower eyelid after operation. Generally, proper postoperative care can maintain the effect of pouch for about 5 years.

Q: You see, after I finished double eyelid surgery, my eyes turned red, which was scary, and my lower eyelids turned blue and yellow. Will these colors fade?

A: This happens from time to time in ophthalmic surgery. We call it blood stasis. Mainly because of intraoperative or postoperative tissue bleeding, blood spread along the loose periorbital tissue to the subconjunctival (red) and periorbital subcutaneous on the sclera surface. As time goes by, the skin turns from blue to yellow and finally returns to skin color. This process usually takes 7- 10 days, but the congestion under the bulbar conjunctiva takes about 15-20 days to dissipate slowly due to the small blood vessels in the bulbar conjunctiva, but it can finally disappear without leaving a trace.

Q: I have eyeliner tattooed on my upper and lower eyelids. Does this affect my eye surgery? The lower eyeliner is a little loose. Can you remove the bags under your eyes at the same time?

A: Generally speaking, after tattooing the eyeliner, eye surgery will have some effects, especially on the lower eyeliner. When the bags under the eyes are removed (peeled off), the lower eyeliner will inevitably move outward after the skin is tightened. If the eyeliner is on the gray line of the lower eyelid (above the root of eyelashes), it has little effect, but this situation is less. In this case, you can only take care of the eyeliner and don't remove too much skin. Eyeliner is scattered into the muscle, and some can be removed at the same time when making eye bags, but it is impossible to completely remove it, because the skin outside the muscle is dyed, and removing the dye sometimes causes skin defects and eversion. Of course, if the eyeliner is too wide, double eyelid surgery's eyes are too dramatic, exaggerated and unnatural.