Although most eye surgery products are considered safe, a few come with risks that potential patients must be made aware. All systems and products were created and designed by human knowledge, so they are not perfect. Perfection can be reached only through Jesus Christ."If by any means I might attain unto the resurrection of the dead. Not as though I had already attained, either were already perfect: but I follow after, if that I may apprehend that for which also I am apprehended of Christ Jesus. Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before, I press toward the mark for the prize of the high calling of God in Christ Jesus. Let us therefore, as many as be perfect, be thus minded: and if in anything ye be otherwise minded, God shall reveal even this unto you." (Philippians 3: 11-15)
Surgical devices come in several forms. Phacoemulsification and laser correction are both systems designed to improve the surgical process and a patients vision while minimizing risks. Viscosurgical Devices, also referred to as OVDs, are thick liquid like substances used to keep the eye from collapsing during surgery. Intraocular lenses are part of the group of products designed to permanently correct nearsightedness. Despite being useful and convenient for the patient, these types of lenses have serious risks involved with their use. There is a group of high-tech eye surgery products called excimer lasers. One other product that will be discussed in this article is an instrument called a microkeratome. The microkeratome is one of the few devices that actually include a blade. Simply put, the oscillating blade separates the surface layers of the cornea during Laser-Assisted in situ Keratomileusis (LASIK).
During surgery, a microkeratome is placed over the eye and held in place with suction. A small hinged flap is created by the instrument. Then a surgeon uses a laser to sculpt the cornea under the flap into a desired shape. LASIK is now a common procedure, but, despite development of safer and more reliable eye surgery products and tools, the operation does have a few possible risks of complications. Keep in mind, nothing is completely safe and without risks. According to a surgery website, LASIK involves creating the small thin surgical flap. During the LASIK procedure, the surgeon lifts the surface flap and then uses laser energy to reshape the cornea. Once this is done, the flap is replaced. Unfortunately, there are at least two possible risks with creating a flap during surgery. First, the flap could be damaged or come off completely. Second, improper healing of the flap could distort the cornea. However, there are other complications that could arise during and after any corrective vision surgery.
Fortunately, technology has produced several eye surgery products designed to reduce risks and increase patient discomfort during and after the procedure. The slit scanning laser uses small beams that are linked to a rotating device with slit holes. During surgery, the beams scan across these holes and removes surface cells. The advantage of this type of laser is a uniform beam and a smooth ablation area. But slit scanning lasers also have a greater risk of overcorrection not associated with other devices. Spot scanning lasers are the most common type. Basically, spot scanning uses small beams to produce the ablation zone. This type of laser is thought to produce the smoothest ablations while treating astigmatism. Wavefront-quided lasers use light waves to detect and record ocular defects. Spot scanning and slit scanning lasers are both compatible with wavefront-guided systems and are valuable eye surgery products.
During some types of procedures, a technique called phacoemulsification is used. The operation is complicated and uses a variety of eye surgery products. First, the surgeon makes a small incision at the edge of the cornea. He or she then makes an opening in the membrane that surrounds the cataract lens. An ultrasonic device breaks up the cloudy lens into fragments. These fragments get suctioned out of the capsule. The capsule will provide room for and support an intraocular lens (IOL). Intraocular lenses are implanted permanently into the eye. IOLs reduce the need for glasses or contact lenses by causing light entering into the eye to be heavily concentrated on the retina. Intraocular lenses are made of either plastic or silicone. Unfortunately, the list of potential risks for this category of eye surgery products is lengthy. Keep in mind, most are rare. First, a person could lose his or her vision. If problems occur, additional surgery could be needed to remove, replace, or reposition the lens. Optimal vision is not guaranteed with IOL devices. Retinal detachment, pressure, and a cloudy cornea are possible developments. Bleeding, inflammation, and infection could lead to permanent loss of vision or even of the eye itself.
During the phacoemulsification process, liquids are lost, which requires the use of other eye surgery products called ophthalmic viscosurgical devices. The capsule that will eventually contain the IOL is at risk of collapsing, so two types of ophthalmic viscosurgical devices are commonly used: dispersive and cohesive. Dispersive viscoelastics are thick. In fact, one online source describes them as having the consistency of molasses. The characteristics of dispersive viscoelastics make them suitable for coating the eye structures, and they don't wash away easily during the operation. On the other hand, cohesive viscoelastics are thicker and don't flow well. The benefit of the cohesive OVD is that it pressurizes and maintains the structure of the eye. Surgeons must carefully remove all traces of the OVDs from the eye or complications could develop later on.
Surgical devices come in several forms. Phacoemulsification and laser correction are both systems designed to improve the surgical process and a patients vision while minimizing risks. Viscosurgical Devices, also referred to as OVDs, are thick liquid like substances used to keep the eye from collapsing during surgery. Intraocular lenses are part of the group of products designed to permanently correct nearsightedness. Despite being useful and convenient for the patient, these types of lenses have serious risks involved with their use. There is a group of high-tech eye surgery products called excimer lasers. One other product that will be discussed in this article is an instrument called a microkeratome. The microkeratome is one of the few devices that actually include a blade. Simply put, the oscillating blade separates the surface layers of the cornea during Laser-Assisted in situ Keratomileusis (LASIK).
During surgery, a microkeratome is placed over the eye and held in place with suction. A small hinged flap is created by the instrument. Then a surgeon uses a laser to sculpt the cornea under the flap into a desired shape. LASIK is now a common procedure, but, despite development of safer and more reliable eye surgery products and tools, the operation does have a few possible risks of complications. Keep in mind, nothing is completely safe and without risks. According to a surgery website, LASIK involves creating the small thin surgical flap. During the LASIK procedure, the surgeon lifts the surface flap and then uses laser energy to reshape the cornea. Once this is done, the flap is replaced. Unfortunately, there are at least two possible risks with creating a flap during surgery. First, the flap could be damaged or come off completely. Second, improper healing of the flap could distort the cornea. However, there are other complications that could arise during and after any corrective vision surgery.
Fortunately, technology has produced several eye surgery products designed to reduce risks and increase patient discomfort during and after the procedure. The slit scanning laser uses small beams that are linked to a rotating device with slit holes. During surgery, the beams scan across these holes and removes surface cells. The advantage of this type of laser is a uniform beam and a smooth ablation area. But slit scanning lasers also have a greater risk of overcorrection not associated with other devices. Spot scanning lasers are the most common type. Basically, spot scanning uses small beams to produce the ablation zone. This type of laser is thought to produce the smoothest ablations while treating astigmatism. Wavefront-quided lasers use light waves to detect and record ocular defects. Spot scanning and slit scanning lasers are both compatible with wavefront-guided systems and are valuable eye surgery products.
During some types of procedures, a technique called phacoemulsification is used. The operation is complicated and uses a variety of eye surgery products. First, the surgeon makes a small incision at the edge of the cornea. He or she then makes an opening in the membrane that surrounds the cataract lens. An ultrasonic device breaks up the cloudy lens into fragments. These fragments get suctioned out of the capsule. The capsule will provide room for and support an intraocular lens (IOL). Intraocular lenses are implanted permanently into the eye. IOLs reduce the need for glasses or contact lenses by causing light entering into the eye to be heavily concentrated on the retina. Intraocular lenses are made of either plastic or silicone. Unfortunately, the list of potential risks for this category of eye surgery products is lengthy. Keep in mind, most are rare. First, a person could lose his or her vision. If problems occur, additional surgery could be needed to remove, replace, or reposition the lens. Optimal vision is not guaranteed with IOL devices. Retinal detachment, pressure, and a cloudy cornea are possible developments. Bleeding, inflammation, and infection could lead to permanent loss of vision or even of the eye itself.
During the phacoemulsification process, liquids are lost, which requires the use of other eye surgery products called ophthalmic viscosurgical devices. The capsule that will eventually contain the IOL is at risk of collapsing, so two types of ophthalmic viscosurgical devices are commonly used: dispersive and cohesive. Dispersive viscoelastics are thick. In fact, one online source describes them as having the consistency of molasses. The characteristics of dispersive viscoelastics make them suitable for coating the eye structures, and they don't wash away easily during the operation. On the other hand, cohesive viscoelastics are thicker and don't flow well. The benefit of the cohesive OVD is that it pressurizes and maintains the structure of the eye. Surgeons must carefully remove all traces of the OVDs from the eye or complications could develop later on.
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