What are the negAtive effects of laser?

Answer 1

Came to be called the word LASER laser from the first letters of the idea of ​​the work of the laser and in the following sentence:

Light Amplification by Stimulated Emission of Radiation

Light amplification by means Light Amplification by Stimulated Emission Alastgesathi emission of electromagnetic radiation Radiation. It predicted the existence of the laser world Albert Einstein in 1917, where he laid the theoretical foundation for the process of emission Alastgesathi stimulated emission were designing the first laser in 1960 by world Maman TH Maiman using a sapphire crystal and sapphire laser known as Ruby laser.

Laser light differs from ordinary light where it has the following characteristics:

Light emitted monochromatic monochromatic ie, it has one wavelength. Determines the wavelength of light output and color as well as capacity.

Light emitted from the laser is synchronized to any coherent photons all at the same stage, making the light intensity is not significant erosion of optical photons to each other due to different phase between them.

Emitted light has a one-way directional where the laser beam is a package of photons in a straight path, while regular light is scattered and spread throughout the void.

Responsible for these properties is the process of emission Alastgesathi stimulated emission, while in ordinary light emission is an automatic out where each photon randomly Balfoton nothing to do with the other.

If Vallizrabarh for light and not the type of radiation, as many believe.

Classification of laser used

Comes in different types of lasers depending on the uses and diversity of the laser comes from the diversity of the material used for the production there of a solid, liquid and gas, and is the type of foundation most frequently used to distinguish between different species. Is called a laser through the type of material used for example, helium neon laser He-Ne means that the material used is a mixture of helium and neon and sapphire laser means that the material produced for the ruby ​​laser, and so is the rest of the other species. Let us take some examples of different types of lasers:

Solid-state laser solid-state laser is a laser that produced by a substance or mixture of solid materials such as sapphire ruby ​​or a mixture of aluminum and Alitrim Alneodenem and neodymium: yttrium-aluminum laser and is called the TAG for short and the long wavelength in the infrared.

Laser Gas Gas laser is based on material gas such as helium, neon and carbon dioxide and size from the wave in the infrared and are used to cut solid materials for high capacity.

Alxsamr laser Excimer laser and fired on the types of lasers that use inert gases such as chlorine or fluorine, krypton or argon gas and produces a laser beam with wavelengths in the UV.

Laser Dye laser dye which is a complex organic materials such as Alrodamen rhodamine 6G dissolved in alcohol solution and produce a laser can be controlled at a wavelength of about.

Semiconductor Laser Semiconductor laser, and sometimes called the laser diode and depends on the semiconductor materials and the advantage of the size of the laser is small and consumes little power, therefore, used in precision equipment such as hardware CD and laser printers.

Characterized by laser starring waveform example, the wavelength of the laser Sapphire is 694nm, and is selection of a laser at the wavelength required as in the table illustration below, for example, uses a laser gas carbon dioxide in the metal cutting hard because the long wavelength in the infrared is thermal, radiation, if focus fell on the surface of metal Tvebh.

Has opened a multi-use laser ample room to eliminate a lot of medical problems and surgery, which was the major concern of patients and doctors as well as many of those problems were time-consuming in the treatment or they do not treat her.Vastkhaddamat laser may be considered in the beauty of the modern uses but the fields have varied very much.

There are 6 types of medical lasers currently used in clinics, dermatologists and plastic surgeons, all of proven effectiveness. For the following purposes.

1 - Azralawaahaldmoah Vascular Laser

There are several types of wavelengths used in this area is perhaps the most famous 585, 595m. This type of laser is directed to the hemoglobin inside red blood cells, and has many uses of the most important is the treatment of red birthmarks Haemangioma & Portwin Stain, as well as expansion in the capillaries Telangiectasia, has recently proved its effectiveness in the treatment of warts and rosacea.

2 - Azraltsbgat PigmentedLaser

There are also several lengths of waves are used depending on the condition, such as:

Nd YAG double frequency 532nm

Ruby 694nm

Alex 755nm

Nd YAG 1064nm

The longer the wave the greater the depth of the laser say absorbed by the pigment cells, and uses this device in the dark birthmarks BakerU "s Nevus, Nevus of Ota, as well as in the treatment of freckles and grains uncle and tattoo removal.

3 - Laser Resurfacing Peel

There are only two machines are:

Erbium 2940 nm

Co2 10.600 nm

These devices simply remove the outer layer of the skin and can control the extent of the required depth, as well as an increase or decrease the laser power.

Can be treated with removal of skin tumors, surgery is sometimes preferable to the laser in such cases. They can also be full face peel to remove superficial wrinkles.

This is the most dangerous lasers in terms of use, because it may cause complications such as bacterial or viral infections or skin scarring, if not used properly.

4 - Laser Alokzaimr

Wavelength 803 m, a modern lasers and proven in the treatment of vitiligo, psoriasis and other skin diseases.

And no doubt the usefulness of this device is to shorten the duration of treatment.

5 - laser peels without removing the outer layer of the skin Nonablative Resurfacing

This is the latest devices that are used to remove wrinkles on the face surface, and there are more than ten kinds of wavelengths most famous m1450, 1540nm.

The idea is that these devices are heated lower layer of the skin, specifically collagen and then Fibroblast stimulate fibroblasts to produce new collagen Collagen Remadolling be more dynamic and result in skin tightening. Often note very little change before and after laser sessions, not recommended to use these devices to the skin brown because it may cause a brown discoloration.

6 - Laser Hair Removal

Constitutes more than 80% of the applications of laser

Information on laser hair removal

Laser light focused radiation to penetrate the skin and hair follicles where these bulbs absorbing.

The laser decrease the density of the hair after several sessions at intervals spaced The effectiveness of this method on the density of hair in the area to be treated and on the degree of hair growth, the more the hair is thicker the better the results, so treatment is more effective when people with black hair or dark brown because it contains a higher proportion of melanin, which absorbs light by more

Types of laser hair removal:

1 - Ruby and Ruby wavelength 690

One of the oldest and most effective devices, especially for white skin and black hair but it is not suitable for brown skin because it may cause Tbakat brunette.

2 - Alex and Alalex wavelength 755

It is the longest wave of Ruby and effectiveness of his approach, which is less painful than Ruby, more commensurate with the skin brown, but there are likely to occur in some of the effects if the user is experienced.

3 - Diode and LED wavelength 800

One of the modern devices which also effective approach for your Alalex, believed to be theoretically less impact than others, but practical experience showed that their results are close.

4 - Nd YAG wavelength and 1064

There are two types of this device, one short Ndth 3 msec and the other long Ndth 10 msec or more, and both are very important and does not cause negative effects, but a long-pulse, is the more effective it may be more painful. In fact, all lasers are effective and safe, if used the right way, so the experience is determined by the proportion of negative effects.

We see the negative effects of the best hardware and the reason is not in the device, but from the user, and vice versa.

Therefore, care must be taken to choose the doctor and the center of a long experience in this field to less incidence of adverse effects

Of the modern uses of lasers, especially laser ruby ​​Ruby laser or laser Alexandrite Alexandrite laser is to remove excess hair unwanted and is the laser is the only way which destroys the hair follicle without causing any skin problems and without pain or surgical intervention or hormone, where he works Laser by pulses of red lead to the rapid destruction of excessive hair follicles. You do not need a meeting of the ruby ​​laser for more than ten minutes to remove facial hair As for the rest of the body Vtakhadd and a relatively longer time. And eliminate the laser on each hair follicle, which in the process of full development does not affect the follicles, which in other stages of growth, so you need the patient to 3-6 sessions are not the elimination of 85-90% of hair follicles and therefore did not appear again.

But each type of skin used a device may be the best, but for black skin is better not to use a Ruby Ruby because it is a strong black skin and may cause discoloration. It may be relatively better devices is a wave of class Alalexandraat Alexandrite Although the class as well as diode Diode Ayej Ndyag both proved its effectiveness and its safety for the skin brown. For each category there are many companies producing these devices best determines the quality of the device is a doctor.

Laser light focused radiation to penetrate the skin and hair follicles where these bulbs absorbing.

Turn the laser energy into heat weakens the hair follicle without causing any internal complications, and the skin is protected during treatment by the process of cooling and the effective pumping soothing to the skin rushes the same speed of light.

This dampening works to cool and soften the upper layers of the skin of a believer for people more comfortable, helping to protect the skin during treatment and at the same time helps to deliver greater amounts of light reach to the ends of the follicle to destroy it.

The laser decrease the density of the hair after several sessions at intervals spaced The effectiveness of this method on the density of hair in the area to be treated and on the degree of hair growth, the more the hair is thicker the better the results, therefore, treatment is more effective when people with black hair or dark brown because it contains a higher proportion of melanin, which absorbs light by more.

The owners of blond hair, they need more sessions to reach the desired result taking into account the fact that white hair Shayeb not affected by the laser due to lack of the presence of pigment in it.

If you use the laser in some places, such as the neck and the hair and ground, the hair does not grow thicker and it grows in length, and that observed when a certain class of women and believed that the reason is the type of laser or method of use, and usually are advised not to remove hair on the neck if he was wild.

Laser is also the most important and the best means of sanding the skin and therefore used to remove scars and surgical procedures and treatment of acne scars and wrinkles of the face-lift surface without surgery. As for the wrinkles is not the role of the laser. There are several types of lasers are used to produce multi-sanding the skin, most famous of these types of laser carbon Co2 laser and laser Erbium Erb-YAG laser which lead to the removal of layers of the skin at the discretion of the doctor and according to each case. Occurs after the complete healing during the 7-10 days following which the skin color tilted to the red and the redness of the skin vary depending on the type of laser used, as well as skin type. With the laser carbon be a short period of redness of the skin about two weeks after the start of the skin in tanning to the point a little extra on the degree of normal skin and different degrees and time on the darkening of the skin by skin color, the original People with darker skin are vulnerable to changes in the color-white. As for the Erbium laser does not have a darkening of the skin and continue to red. These changes will continue for 2-3 months and then expires after that due to skin color Tabaayo cleanse the amazing results of the laser.

Has recently been developing a new type of laser composite of carbon species with laser Erbium laser and leads to reduce the time and the percentage of redness and darkening of the skin, but due to the cost of a computer hyperbole not yet used widely.

Can be

Laser hair removal anywhere in the body such as armpits, hands and legs and other places of the body, and there are places where the best treatment of the face. There is no caveats of using laser device anywhere in the body.

Hair does not disappear from one session of laser, but requires several sessions and noted the patient that there are 3 benefits of lasers is that the hair is thick, less thick and become wild and black hair less than its color and becomes Amishqr need hair to 2-3 months to grow again

Of applications developed for the laser in the fields of cosmetics is also beauty and tighten eyelids and is used where the laser carbon or laser Alneodinyum Nd-YAG and working laser in these cases to reduce the rate of blood loss as well as bruises that appear under the eye as a result of the operation in the traditional way, which leads to speed healing and the patient can exercise ordinary life a few days.

Also uses a laser alternative to surgical scalpel which leads to reduce blood loss by more than 50-60%. And uses a laser as an alternative to surgical sutures, both of the skin or nerves or blood vessels, leading to faster healing of wounds.

The laser of the most important means of removing skin blemishes and birthmarks brown color, such as nevus Unna and freckles and sunspots as it would destroy the colored cells without pain and thus without any anesthesia, both kidneys or the topical and sessions ranging from 6-10 on average, and time from between session and the other from month to two months.

As for birthmarks or congenital blood associated with varicose veins is used another type of laser works on the blood vessels without any effect on other surrounding tissue, which facilitates the elimination of such vessels stretched thus eliminating the birthmark vessels.

Types of laser target hemoglobin associated with the seed of oxygen and thus when the impact on hemoglobin produces high temperatures lead to cracking the blood vessel capillary containing this hemoglobin and thus the interruption of blood flow and the advantage of this property, for example in the treatment of nevus pigment russet Port wine stain, or expansion of capillaries .

Laser treatment of tattoos

Tattoos can be defined simply as a presence of particles of a substance into the skin be of a certain color and placed a certain way to give a certain scene, as the patient wants.

And can get rid of tattoos using laser, as there are types of lasers can treat tattoos, but not qualitatively, such as CO2 laser, which can remove tattoos by removing layers of skin containing the tattoo, and then it leaves a scar so.

Can also remove tattoos by property selectivity where each laser is directed to a specific purpose, and through the use of lasers oriented pigmentation with a pulse is very short, such as lasers, called Q-switched, such as laser Ruby, Alalexandraat and the ND: YAG, where the laser beam hash particles of tattoo making it easier to swallow by the white blood cells.

And adopt the final outcome of the treatment on the type of tattoo, color, and depth, and number of meetings, and should not be thought that the patient that the tattoo will disappear completely, as the tattoo updated by amateurs is easier to remove from that induced by professionals, may also leave the laser after the termination of the meetings a little lack of pigmentation in the place of the tattoo.

What are the complications of the use of a laser hair removal?

- With modern technology and the presence of cooling devices associated with the laser device, the complications, but I said a lot of the most important of these complications is the formation of brown discoloration is usually progressive and disappear after weeks or months and sometimes longer. And rarely a lack of pigmentation occurs white areas of the laser and this is usually of the skin sunny Tanned Skin so always recommend not to the work session of the laser if the patient has nailed his skin by the sun.

Lasers are of a long wave and non-ionized and does not have a property to convert normal cells cancerous in theory and even from the scientific point of the laser apparatus is known since 1960 AD, yet there is no single case to prove that the laser was a cause of cancer cells.

Lasers are ionized radiation is non-ionizing radiation, and this simply does not cause any imbalance in the bar DNA and therefore does not cause any abnormal growth of cancer cells do not cause cancer, skin or mucous membranes as it passes by the laser during treatment

Laser hair removal usually does not exceed the surface layer of skin penetration and it can never reach the uterus. If hair is removed from the belly of a pregnant woman, it is allowed and does not constitute any danger to the pregnant woman and often use it to pregnant women do not have any negative effect, thank God. This type of radiation is safe and has no negative effects on women and her fetus.

Usually, the pain of the laser potential, and can get rid of this pain, put the request on the place of anesthetic cream before laser hair removal, half an hour

What are the precautions that should work out when to use a laser?

- The most important organ of the body must be preserved is the eyes, must be coverage during a session of laser treatment. Each laser has different glasses depending on the wavelength of the laser.

What are the measures taken by the patient after the laser?

1. There may be a mild degree of redness after laser treatment.

2. Usually put cold compresses for 5 10 minutes to relieve pain and irritation.

3. Can be put cortisone cream after cold compresses for 2 days only.

4. Allowed to shower after the laser, but it should be nice and without a scratch.

5. Cosmetics can be used the next day for a laser.

6. After about 5 15 day of hair removal laser hair will appear dark on the surface of the skin and this is the hair that has been processed and not the growth of new hair can be removed without any significant resistance wipe it with water and towel for example.

7. Do not forget to apply sunscreen frequently and for a period of several months