What is a Lens Implantation?

조회 281 | 2022-09-05 14:19
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A lens implantation A lens implantation is a surgical procedure that replaces the lens within the eye. The implant is placed within the capsule of the lens and the incision is closed with stitches. Most patients are discharged within a few hours after surgery. They may be prescribed painkillers such as paracetamol or ibuprofen to alleviate any discomfort. They will also be given instructions for how to care for their eyes after the operation. They will also be given eye drops to promote healing and to prevent infection. 렌즈삽입술 Distal end portions 13 and 28 extend twenty-five millimeters beyond the pivotal connection provided by the screw 23 The screw 23 is provided with a threaded end that defines a bore. An intermediate portion 29 extends through the bore to provide a pivotal connection. The screw 23 is designed to move the elongated element 19. It can be operated by rotating the distal end portions 13 and 28, which extend about twenty-five millimeters beyond the screw's pivotal connection with the elongated element 19. The screw 23 may be screwed into the iris of the patient or into a lens to be implanted. A second elongated member, or trough, is provided between the first and second elongated members. The second elongated member includes a handle end portion 20 and a distal end portion 21. The distal end portions are connected to each other with an intermediate portion 29. The distal end portion 13 defines an open base region 15 of the trough 14. The trough is spaced about one millimeter from the lens 11. The opening in the distal end portion is sufficient to accommodate a lens 11 that is one millimeter thick. In the closed position, the distal end portions 13 and 28 are close together. The distal end portion 13 retains a portion of the lens 11 in the trough 14. The folded configuration of the lens 11 prevents the lens from being damaged. Explantation of an IOL is rare, but it may be required if the lens is not performing as intended. It may also occur due to postoperative opacification. With the increasing number of new lenses in the market, constant vigilance is necessary to ensure IOL biocompatibility. A lens implantation instrument 10 has a handle that can be held with one hand. The instrument 10 is made of stainless steel. It is approximately twelve centimeters long in the illustrated embodiment but can be made of any size.렌즈삽입술 A lens implantation screw may contain a multiconductor cable. It must be at least 305 millimeters in length and marked with a warning sign for the presence of energized parts. A lens implantation device includes a lens holding microcartridge 12. The microcartridge is loaded with a lens. The microcartridge is positioned between clamping edges 17a, 17b and 17c. The implantation nozzle portion 68 of the lens implanting device is inserted into the microcartridge by forcing the lens into the implantation nozzle portion 68. A lens implantation device may also include a threaded end cap 18. The cap may be separate or integral to the lens injecting device. The threaded end cap 18 is fitted within the threaded sleeve 14. A screw 23 provides a pivotal connection between the lens inserting device and the lens holder 14. A lens implantation device is also characterized by a plunger tip 20 that pushes the lens into position. This tip has a concave cylindrical surface 52. Surgical procedure for lens implantation A surgical procedure for lens implantation involves the replacement of a damaged lens in an eye. It can take several hours to complete. During this time, your eye may feel sensitive to light and you may experience pain. Your surgeon may give you prescription eye drops to help you cope with pain after surgery. You will also be given an Implant Identification Card, which you will need to show to your eye care provider in the future. After the surgery, you should rest at home for at least a day.렌즈삽입술 The surgical procedure is done with the help of local anesthesia. Local anesthesia is usually administered through drops or injections into the tissues surrounding the eye. The eye is then held open with a lid speculum. The surgeon then makes a small incision in the cornea and lens covering. The IOL is then inserted into the eye. In some cases, the lens can also be a multifocal. Depending on your eye condition and lifestyle, the surgeon may use different types of implants. Typically, the implant will be placed in the front of the iris or behind the iris. Afterward, the surgeon will remove the lubricant and close the incision with tiny stitches. The entire procedure usually takes about 30 minutes. The natural human lens is about the size of an M&M candy. It is contained within a thin capsule. It is suspended by microscopic support ligaments called zonules. These ligaments extend 360 degrees around the lens's circumference, ensuring that it is held securely in place. The lens is usually implanted behind the pupil and the iris. One type of lens implantation procedure involves the implantation of a phakic lens over the natural lens. This procedure is approved by the FDA to treat extreme nearsightedness. Astigmatism is another lens implant procedure expected to be approved soon. However, the costs associated with this procedure make it a more expensive option. In some cases, patients may choose to have a dual-focus IOL implant, which corrects both distance and near vision. The standard lens implants, which are known as monofocal, are not ideal for many patients. Some patients opt for premium lenses such as toric or presbyopia-correcting intraocular lenses. Ultimately, the decision to use one of these options is personal. An additional type of lens implantation procedure is called phacoemulsification. The surgeon will make a tiny corneal incision and use a probe to send ultrasound waves into the eye. Once the ultrasound waves break up the cataract, the surgeon will suction the fragments from the eye and place an artificial lens in the empty capsule. After this process, stitches are used to close the incision. This procedure is not as complicated as cataract surgery. The procedure is similar to a normal one except that the implant must be positioned properly. If it is placed improperly, the implant will only correct the near vision and not the farsightedness.렌즈삽입술

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