Is the vitreous divided into anterior and posterior segments, and should it be installed after vitre

The recovery period of surgery is about 6 months to 1 year, during which you should pay attention to medication and eye hygiene, and whether your vision will deteriorate depends on what you said. If it is close to the eye, it will definitely have an impact, because the intraocular lens does not have the function of telescoping, and it cannot be adjusted when looking close, so it is not a big problem to see far.

In general, a natural vitreous replacement will be implanted after the vitreous surgery, unless the patient wants to have a prosthetic eye that cannot be used, or if they want to lose their vision. Otherwise, it is necessary to implant the vitreous after the surgery. Of course, it is best to choose a foldable artificial vitreous balloon for vitreous, after all, substitutes such as silicone oil require repeated surgery, and complications will occur, and the time is relatively large.

As one of the four major advances in retinal detachment surgery in the world in 2012, one of the top ten advances in eye trauma in China in 2013 and one of the top ten achievements of the Chinese Ophthalmological Society in 2015, what is the role of FCVB artificial vitreous in our lives?

The original vitreous is transparent, and for vision, it is only a refractive medium, and the impact on visual acuity is limited, and the final visual acuity depends on the integrity of retinal photoreceptor cells. The vitreous, after excision, forms a water eye, which is not the main impact on vision, and there is no need to install artificial vitreous.

It is not possible to have a face-to-face consultation here, so it is difficult to draw conclusions. For this question, it is best for you to consult with a specialist outpatient clinic in a professional ophthalmology tertiary hospital.

Do you mean motorcycles? Half of the exhaust of a motorcycle is divided into the front, middle and rear sections, and if it is a train, I guess it is the front and the back?

You want a little longer.

You still need to work out, and you still work out with him, and you can't do it this weekend.

The endoderm and visceral mesoderm are located in the embryonic body, forming a longitudinal canal called the primitivegut. The median ventral part of the original antiflushing duct is connected with the yolk sac, called the midgut; The cephalad and caudal parts of the primitive digestive canal are called foregut and hindgut, respectively. The anterior cavity of the foregut is enlarged into a primitive pharynx, which is closed by the pharyngeal membrane opposite the four mouths; The tail end of the hindgut is enlarged into a cloaca, and its ventral side is closed with a cloacal membrane opposite the anal fovea.

1. The harm of not removing it in time.

1) A small amount of hyphema is usually absorbed naturally within a few days, and if the blood is full of anterior chamber with high intraocular pressure, anterior chamber irrigation should be performed immediately. Patients with cataract should have a small amount of vitreous blood that can be absorbed, and when there is a large amount of vitreous hemorrhage, posterior vitrectomy should be performed.

2) The best effect of epithelial implantation in the anterior chamber is not good, and the prognosis of cataract patients is poor, once diagnosed, the deep sclera near the incision in the lesion area should be removed immediately, and the hyperplastic epithelial tissue behind the cornea in the affected area should be frozen, the affected iris should be removed, the involved ciliary body should be frozen or excised, and the anterior segment vitrectomy should be performed to ensure that the vitreous does not adhere to the cornea. This is one of the harmful manifestations of cataracts.

2. Hazards after surgery.

1) Once endophthalmitis is suspected after cataract surgery, aqueous humor and vitreous humor should be aspirated immediately for bacterial or fungal culture and susceptibility test. The affected vitreous is excised with a vitrectomy and antibiotics are injected into the vitreous cavity, vein, and subconjunctiva.

2) The postoperative glaucoma of cataract should be treated locally and systemically at the same time to avoid the harmful manifestations of cataract.

Baoding Xinshi Eye Hospital.

Cataracts can not only make you unable to see clearly, but also cause complications. Because cataract causes the lens of the eye to gradually become cloudy, to a certain extent, it will affect vision, and in severe cases, it can only see light, and in severe cases, it will not even be able to see light. Cataracts will be secondary to glaucoma during the expansion or overmaturity period, so that the eyes are not only invisible, but also swollen, painful, and red.

So cataracts to a certain extent require surgery**.

Cataract is a cloudy lens, which is almost irreversible, and there is currently no specific drug for cataract, do not believe the drugs or health products that claim that cataract has miraculous effects.

Surgery is the most effective method, which is to directly remove the cloudy lens and replace it with a new one.

Some elderly people think that there is no need to rush to surgery if they can still see now, and they have to wait until they are almost out of sight before having surgery. This is actually a concept that was almost half a century ago.

At that time, the reason why the principle of late surgery was adhered to was that due to the limitations of technology, it was easier to remove cataracts when they were mature and hard.

The current cataract surgery has entered the field of microsurgery, which is called phacoemulsification surgery.

The surgical method is to insert a very fine ultrasound needle into the eye through a small incision of a few millimeters, and use the principle of ultrasound vibration to shatter the cloudy lens and suck it out. An intraocular lens is implanted to allow the intact and transparent intraocular lens to continue working in the eye instead of the original lens.

The surgery usually can be done in 10 minutes without general anesthesia and is completely tolerated by most older people. Therefore, at the moment when this technology is mature, there is really no need to delay until you are almost out of sight and then have surgery, you can do surgery one step earlier, you can see again one step earlier, and greatly improve the quality of life.

The chip manufacturing process can be broadly divided into wafer fabrication, wafer probe, and packaging.

Test process (initial test and final test) and other steps. Among them, the wafer processing process and wafer probing process are the front end process, while the assembly process and test process are the back end process.

According to its manufacturing technology, it can be divided into discrete device semiconductors, optoelectronic semiconductors, logic ICs, analog ICs, memories and other categories, and generally speaking, these will be further divided into subcategories.

In addition, in addition to the classification of manufacturing technology, ICs are also classified by application field and design method, although they are not commonly used recently.

However, there are also ways to classify IC, LSI, VLSI (Very Large LSI), and their size. In addition, there are methods that can be divided into analog, digital, analog-digital mixture, and function according to the signal they process.

Wafer processing process: The main work of this process is to fabricate circuits and electronic components (such as transistors, capacitors, logic switches, etc.) on wafers, and the processing process is usually related to the type of product and the technology used.

However, the general basic steps are to clean the wafer appropriately, then oxidize and chemical vapor deposition on its surface, and then carry out repeated steps such as coating, development, etching, ion implantation, metal sputtering, etc., and finally complete the processing and fabrication of several layers of circuits and components on the wafer.

The front section is made of tubes, the middle section is punched, and the rear section is wired.