Illuminated Scalpels: How Lasers have Impacted the World of Medicine and Optical Surgery

时间:2013-03-04 14:30来源:Opli作者:Savita 点击:
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摘要:激光已经在逐渐引领外科医学界走向顶尖,程序使用光束比传统手术更快、更安全。确实,激光已经影响了世界医学届的常规诊断治疗法,而且经常使用在这样的医疗领域和和健康检测,例如心脏病、皮肤病、神经外科、胃肠病、妇科、肿瘤、肺学、骨科、眼科这些科室。

关键字:Lasers ,激光器,the World of Medi

Lasers are leading the way today in the surgical field, making procedures using the beams quicker and safer than traditional surgeries. Indeed, lasers have impacted the world of medicine as they are regularly used in such medical and health specialties as cardiology, dermatology, gastroenterology, gynecology, neurosurgery, oncology, pulmonology, orthopedics, and ophthalmology

Therefore, about every system in the body can be treated with lasers, including the heart, skin, intestinal tract, reproductive system, nervous system, lungs bones, and eyes. In addition, lasers are also used in cosmetic procedures as well and are most often used for removing tattoos, excess body hair, wrinkles, or birthmarks. Indeed, lasers offer added safety and protection to anyone contemplating surgery.

Three basic types of lasers are used in surgical procedures, namely the YAG (yttrium aluminum garnet) laser; the Co2 or carbon dioxide laser, and the pulsed dye laser. Lasers possess different beams or colors, each of which, in turn, is applied to a specific procedure. Basically, lasers, when used in surgery, are employed to safely kill diseased tissue; destroy lesions or shrink tumors; cauterize or seal vessels in the circulatory system; improve the appearance or wrinkled skin; or to treat eye diseases, such as glaucoma.

Treatment of glaucoma
In the field of optics, lasers are used quite frequently, and are applied in procedures that treat the two main types of glaucoma, or open-angle glaucoma and angle-closure glaucoma. These diseases, which steal one’s sight, are caused by an elevation in the intraocular pressure (IOP), or the pressure within the eye.

Most glaucoma sufferers are affected by open-angle glaucoma. The disease, which develops gradually over time, does not exhibit any symptomatology. Therefore, it can only detected upon a vision exam. Also known as chronic glaucoma, the condition is caused by a clog in the drainage system in the eye or when the eye produces an overflow of aqueous fluid, either of which increases the IOP.

On the other hand, angle-closure glaucoma, also referred to as narrow-angle glaucoma, results when the drainage canal is blocked by the iris or the space between the iris and cornea narrow. Unlike open-angle glaucoma, which occurs slowly over time, angle-closure glaucoma develops rather rapidly and produces symptoms that are suddenly noticeable. These symptoms can include nausea which accompanies severe optical pain, blurred or sudden loss of sight, or excruciating headache or eye pain.

Individuals who are at an increased risk for glaucoma have a genetic predisposition toward the disease, are of Latino or African-American descent, or may suffer from diabetes or cardiovascular disease. The chances that glaucoma will develop also increase with age.

Surgical procedures
Actually, optical lasers were the first lasers used in surgical procedures and have been used for this purpose since 1960. Given the number of years lasers have been employed to correct the vision then, they have more than proven their worth in the optical field.

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