What is Cold Laser Therapy?

An excimer laser is an invisible ultraviolet beam generated by the human eye after being mixed with fluoroargon gas. It belongs to a cold laser and can precisely ablate the part of the cornea that is expected to be removed without damaging surrounding tissues and other tissues. The excimer laser has a short wavelength of 193nm (nanometer) and cannot penetrate into the eye, so it does not have any adverse side effects on the internal tissues of the eyeball. There is also no reason to have sequelae after several years of treatment.

Cold laser

Right!

An excimer laser is an invisible ultraviolet beam generated by the human eye after being mixed with fluoroargon gas. It belongs to a cold laser and can precisely ablate the part of the cornea that is expected to be removed without damaging surrounding tissues and other tissues. The excimer laser has a short wavelength of 193nm (nanometer) and cannot penetrate into the eye, so it does not have any adverse side effects on the internal tissues of the eyeball. There is also no reason to have sequelae after several years of treatment.

Chinese name

Cold laser

Precautions

Do not wear hard contact lenses

Function

Precise ablation of corneal removal

Belong to

Ultraviolet beam

An excimer laser is an invisible ultraviolet beam generated by the human eye after being mixed with fluoroargon gas. It belongs to a cold laser and can precisely ablate the part of the cornea that is expected to be removed without damaging surrounding tissues and other tissues. The excimer laser has a short wavelength of 193nm (nanometer) and cannot penetrate into the eye, so it does not have any adverse side effects on the internal tissues of the eyeball. There is also no reason to have sequelae after several years of treatment.

What is the concept of excimer laser?

The so-called excimer laser refers to the laser generated by the stimulated dimer. It is called an excimer because it is not a stable molecule. It is a molecule that has been formed in a series of physical and chemical reactions caused by a laser-mixed gas subjected to external energy lasers, but has a fleeting lifetime. Its lifetime is only a few dozens. In nanoseconds, an excimer laser is a pulsed laser, and lasers with different wavelengths are generated due to the cavity filled with a mixture of different rare gases and halogen gases. The wavelength range is 157-353nm.

The working gas used in laser refractive corneal surgery is ArF, which produces an 193nm excimer laser, which is an ultra-ultraviolet light wave. When each laser reaches the tissue, it can vaporize the tissue molecules, so its accuracy The degree is very high, and because it is a cold laser, there is no thermal effect on the tissues next to the irradiated site. With this accurate gasification, the cornea of the eye can be accurately cut off, but the structure of the cornea is No adverse effects