Applications of lasers in surgery and medical field

Applications of laser in the field of surgery and medical science

Introduction of laser light

Laser light is different from ordinary light due to its extra features. Laser light is highly monochromatic. The laser beam is highly directional. In the 20th century, laser technology came through by the efforts of generations of the scientist. Laser technology finds its applications in almost every field of science like industry, communication, and medicine. In the 20th century, laser technology introduced, developed and perfected in the field of medicine. Here we will discuss some important application of lasers in the field of medicine.

Lasers in dermatology and medicine

Diseases like port wine stains, haemangioma and lentigines can be treated by using argon laser, laser diode, and ruby laser. A laser beam is an excellent alternative for cosmetic procedures. The laser emits an intense beam of light that can target specifically conserved. Such as blood vessels, dark spots, rough skin texture, and some medical concerns. Laser therapy is a quick and regeneration of skin and wrinkles for cell metabolism. Laser therapy can be used to remove unwanted hairs of the body. Successful skin cancer treatment with laser, have been reported in

Human beings.



·         Representation of treatment of laser on skin.

Uses of laser in the treatment of eyes

 The first big success of laser in medicine is in the treatment of eyes. The detached retina can be treated by laser. Retina is a light-sensitive layer, present inside the eyes.

Lasik Eye Surgery

 Lasers are used in Lasik surgery. It produces light in the ultraviolet region. Ultraviolet light is absorbed by the topmost layer (cornea) and it cannot reach the back of our eye (retina). It is not harmful to the eye. Whereas laser light in the visible region reaches the retina and it can damage retina.



·         Representation of laser treatment for retina.


Uses of laser in the field of Dentistry

Medical professionals use the laser which is extremely focused light beams to alter or to remove tissues in small amounts. The dentist uses the lasers in a variety of procedures, involving to remove the overgrown tissues, to reshape the gums or to whiten the teeth. For the treatment of root canals, blue laser is important.

·         Representation of use of laser in field of dentistry.

Laser Glazing

Laser can be used for dental treatment. A laser beam can be used for preventing tooth decay by a painless process called laser glazing. From a high pulse laser, the laser beam is focused on the dark decayed area of teeth cavities to destroy infection in the affected area in a fraction of second.

Uses of laser in surgery

The use of laser is for surgery is increasing. In surgery, the focused laser beam is used. The infrared beam from carbon dioxide laser is strongly absorbed by water molecules in the tissues. It produces rapid evaporation of these molecules and consequent cutting of tissues. For tissues cutting the laser beam plays a critical role. The type of tissue cutting which involves laser beam is painless and bloodless.



·         Representation of use of laser in surgery.


Main advantage of using laser beam Scalpel in surgery

·         The incision (cutting) becomes quite easy by using the laser beam scalpel.

·         Probability of incision in inside tissues increases

·         The chance of damage to other tissues decreases.


The laser beam has already used for several years to treat detachment of the retina, cataract surgery. Before the invention of the laser detachment of retina was treated by irradiation of the eye with a xenon arc lamp. This method was old and painful. Operation by using laser beam is painless and does not affect the surrounding healthy tissues. A laser beam can be used to burn out small tumors. Laser is used to treat viral diseases of the eye.

Laser Angioplasty

A laser arc can be used for heart surgery, with the progress of optical fibers. In cardiovascular diseases, the lasers are mainly used for laser angioplasty, laser thrombolysis, and photo chemotherapy. The common problem with the arteries is a build-up of plaque on their interior walls. The plaque consists of fatty materials and calcium etc. It blocks the arteries and reduces blood flow. This results in Angina pectoris. It is a condition that affects millions of people worldwide. If the coronary artery is partially blocked, then the situation can be improved.  Laser beam through optical fiber can be used to vaporize the plaque. It opens a clear channel for the smooth flow of the blood. This method is called a laser Angioplasty. Carbon dioxide laser and Nd: YAG laser can be used for this purpose.

Lasers are being used in various ways in medicine. They are used in:

·         Fiber-optic laser can be used to treat bleeding ulcers. The laser can photocoagulate the blood and causes the recession of the bleeding. We prefer carbon diode laser and Nd: YAG laser for this purpose.

·         Kidney stones can be broken into pieces by using Nd: YAG laser.

·         Laser is very helpful in curing the disease of Gynecology, ear nose, and throat.

I hope you will enjoy the article.





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physics teacher - Dec 25, 3:52 PM - Add Reply

Nice article

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