Laser hurtinag eyes
Does the laser damage your eyes? Will exposure to laser radiation cause eye damage and vision problems in the future? There are many people who may be concerned about this, but I must say that the stress of these people is not unnecessary. Laser can cause devastating damage to the eyes.
If you want to get acquainted with the effects of laser radiation on your eyes, we recommend that you read the following article.
Effects of laser on the eyes
Introduction
We get a lot of worries from different people who have gone to medical clinics to use different lasers; we get the worries of these people about whether the laser radiation will damage their eyes or not. Not without reason to be able to prevent the effects of laser radiation to our eyes, it is necessary to take special precautions.
Perhaps one of the simplest and most important considerations for both patients and all physicians who use lasers for treatment is the use of special glasses that prevent the laser beams from coming into contact with the eyes.
Effects of laser on the eyes
One of the most common and widely used things today is the use of laser hair removal. Doctors may believe that laser is the best way to remove body and facial hair.
The question arises as to whether using a laser beam that operates near your eyes and on your face can cause eye damage.
Response :
Yes
Lasers can cause serious damage to your eyes. To prevent these serious injuries and irreversible vision loss, it is best to use both standard eye protection for yourself and your doctor who is using the laser device.
It is important that when standard protective equipment is used, eye damage is prevented and the risk of eye injury is reduced to zero.
What are the effects of laser hair removal on the eyes?
Get acquainted (gain, obtain) with present-day techniques that came from Laser Hair Removal.
As we have said, all types of lasers can cause serious damage to the eye, and with the use of standard eye protectors, this damage is reduced to zero. An important point to note is that before you start the laser, you should consult your doctor and team. Talk to the therapist about everything. Doing laser hair removal without a doctor's supervision is forbidden.
We emphasize again that if you go to beauty salons and centers that do not have a doctor's supervision, you should expect irreparable complications and injuries and be sure that in these centers without supervision, you will experience many complications, especially eye complications.
Laser radiation causes damage to your eyes. Laser radiation can cause a lot of biological damage to the eye. The reason is that due to the effect of heat and subsequent photochemical reactions that follow the radiation, eye tissues are damaged. In general, we must say that most of the above injuries are caused by the wavelength of the radiation, which puts the tissue at risk.
So the main issue that laser radiation causes damage to our eyes is due to the wavelength of the radiation, which puts the tissue at risk. We must use safety goggles because these goggles will not allow certain wavelengths to pass.
How do laser beams damage excess eye hair?
The main part of the eye that is damaged by the laser is the retina and lens of your eye. See what side effects the laser beam has on each of these parts of the eye.
The cornea is the living tissue of the eye, and when a ray is shone into your eye, it is the first barrier to light or radiation and is directly exposed to radiation. A thin layer of tears protects the cornea. Due to the structure of the cornea, the average refractive index of the cornea and the tear that covers it is 376.1, which is about 70% of the refractive power of your eye due to the first refraction of light on the surface of the cornea.
One of the important points that the cornea has is that it can repair its tissue within 24 or 48 hours.
Pupil
The pupil is located in the middle of your eye and is actually the path of light entering the eye.
The iris
There are muscles that are located behind the cornea and surround the pupil around it. The cornea will not be visible because it is colorless, but the iris has a pigment and is responsible for adjusting the size of the pupil.
Sclera
It is the whiteness of the eye that is a very strong layer made of dense fiber and protects the components of the eye with its strong texture.
Lens
It is attached to the ciliary muscles by fine ligaments and gives the eye the ability to focus on objects. The lens of your eye has a slow metabolism, so it becomes hard, yellow and dull with age.
Retinal membrane
The next part of the eye the retinal membrane is the innermost part of the eye and is composed of several complex and neural layers.
Nerve tissue cells and light sensors are present in the retina, transmitting light electromagnetic waves into signals and neural messages, which are carried by the optic nerve to the brain for analysis.
Now that you are familiar with the general structure of the eye and its components, we want to say what damage laser beams can do to the eye according to their wavelength.
In general, radiation damage is entirely dependent on the wavelength of the radiation.
The characteristics of energy absorption by different tissues of the eye are the damages to the eye in different ranges of wavelengths emitted by laser devices.
Ultraviolet A rays with a wavelength of 315 to 400 nm
Most of this radiation will be absorbed by the lens of your eye. Any damage can appear in the long run, it means any damage to the eye will be manifested by this radiation in the long run, for example, a person who has been exposed to this radiation in The middle age and later age may lead to cataracts. This problem is not very serious and can be solved with a simple eye surgery.
Ultraviolet b with a wavelength of 280 to 315 nm and ultraviolet c with a wavelength of 100 to 280 nm
Most of this radiation is absorbed by the cornea of your eye. If large amounts of this radiation are absorbed, it causes a phenomenon called Keratocongenectivitis and subsequent blindness.
Sometimes people who work with welding machines have this problem.
Visible light with a wavelength of 400 to 760 nm and infrared with a wavelength of 760 to 1400 nm
Most of the radiation we said is absorbed by your retina. If you are overexposed to this wavelength, you can experience complications such as blindness, permanent blindness, network burns, or lesions along the retina.
The radiation emitted from the Alexandrite laser hair removal device, for example, is in this range, so standard goggles should be used by the doctor and the patient to avoid its dangers.
Infrared rays with a wavelength between 1400 nm and 1 mm
Most of this radiation hits the cornea and is absorbed by your cornea. If you are exposed to this wavelength too much, the cornea will burn.
The important thing about eye damage and laser radiation is to know that in addition to what you read above, the biological damage of laser radiation due to increased light or optical gain is about 100,000 times more severe. So you should never underestimate the importance of wearing safety glasses.
Important points about the biological damage of lasers to the eye
So far we have talked about the injuries and also the need to use laser goggles. To be more aware of the dangers of laser radiation on your eyes, it is better to pay attention to the following points:
First Place
Heat burns caused by heat generated by the laser and occur when the blood flow to the choroid plexus loses the ability to regulate retinal temperature. Bleeding due to burns occurs. These bleeds can cause permanent blindness.
Second place
Your retina can repair minor damage, but when it does laser damage to the retina, it usually leads to permanent, irreparable damage, and sometimes blindness.
Radiation time also affects the risk of eye damage, which is why many modern laser devices take their pulse time to be less than a peak second.
Standards called ANSI Z136.1
It is defined that according to this standard and its principles, the maximum time allowed for you to be exposed to different laser rays is leveled, so before using the laser device, this standard is examined and implemented according to the study device and under In any case, we must not forget that it must be a standard laser goggle and suitable for the laser device itself.
Can lasers used to treat eye diseases also damage the eye?
In addition to the benefits of using these lasers in effective treatment and solving eye problems, side effects from them can cause unwanted consequences in our eyes.
These consequences can indicate improper and disproportionate distribution of laser heat dissipation in tissues adjacent to the target tissue, resulting in unwanted damage to the underlying or adjacent layers.
One of the main concerns for the use of laser beams and ocular hazards is the concern for lasers that are used to treat the eye.
On the other hand, another problem is that the temperature in the eye can not be evaluated in laboratories without the use of non-invasive simulation tools, and therefore, in the event of unwanted damage, the operation is unfortunately not reversible and reproducible.
Mathematical software and software can be used to predict possible damage.
In various articles, the thermal effect of Lasers used in ophthalmology on the anterior and posterior parts of the eye has been investigated. Lasers such as argon fluoride Ar-F and Himium ion H-yag have been studied to study the effect of heat on the cornea and anterior parts of the eye, and Diamond and nd-yag lasers have been studied to examine the effects of lasers on the posterior parts of the eye.
In these studies, the eye is simulated based on a three-dimensional model and the results are evaluated at different temperatures of 236 and 384 ° C for argon fluoride and holmium ion lasers on the cornea and 136 and 764 ° C for Diamond lasers on the retina, respectively The depth of penetration is determined in these studies by the appropriate penetration depth and the depths that are damaged if the laser beam penetrates the tissue.
Are Laser Pointers Harmful to the Eye?
We have to say that staring at laser pointers will reduce vision as well as engage and destroy a number of retinal cells.
In this regard, we must say that hand-held lasers can vary in power from 5 mW, which are ordinary laser indicators, to more than 1,200 mW, high-power blue lasers that can be used to light cigarettes or fire remotely, if Improper use of these tools can lead to serious retinal injuries.
Damage to these retinas by these lasers can remain only at the surface of the retina, or it can cause macular perforation or full-thickness perforation of the retina at the base of the eye.
How can laser eye damage be prevented?
First, avoid laser services in hairdressing salons and centers where there is no doctor's supervision; avoid using laser devices without updating without having standard licenses and a separate standard mark.
Be sure to use standard laser beam filter glasses and anti-laser covers for devices.