The development of life we often used to all kinds of laser equipment,laser has been invulnerable in our eyes, and even scary artificial articles offear. And we also know that the laser is radiation damage, so wear laserglasses is very helpful to us, can let us avoid laser lead to the risk ofblindness. We often hear people talking about the human body harm ultravioletand infrared laser which is more serious, today for ultraviolet laser glassesto you about the difference between laser and infrared laser.
In the laser damage to the body in the most serious eye damage. Laserwavelength in the visible and near-infrared light, eye refractive mediumabsorption rate is low, high transmission rate, and refractive media focusability (that is, the concentrated force). High strength of the visible andnear-infrared light enters the eye through the human eye refractive media,accumulate the light on the retina.
At this point in the retina of thelaser energy density and power density to thousands or even tens of thousandsof times, a lot of light in the retina in the moments together, cause retinalphotoreceptor cell layer temperatures soared, losing light-sensitivephotoreceptor cells to solidification degeneration necrosis. Laser in thephotoreceptor cells in the superheat caused by frozen denaturation of proteinsare not reversible damage.
Once damage can cause permanent blindness of the eye. The wavelength ofthe laser to varying degrees of different effect on the eye, the consequencesare also different. Far infrared laser damage to the eyes, mainly the corneathat almost all of this is because this kind of wavelength laser is absorbed bythe cornea, so most cornea injury, main cause keratitis and conjunctivitis,patients feel pain in your eyes, eyewinker stimulation, afraid of light, shedtears, eye hyperaemia, decreased vision, etc. When the far infrared lightdamage should cover to protect the eyes, prevent infection, symptomatictreatment. Ultraviolet laser cross-eye injury is mainly the cornea and lens,almost all the wavelengths of ultraviolet laser is lens of the eye absorption,and cosco is given priority to with corneal absorption, which can cause thelens and corneal opacity.
The extent of the laser damage to the eyes in addition to related todifferent wavelengths of laser, also with the laser total power of lightentering the eye is associated, energy density and power density. Can laser arebad for us, even the infrared laser and ultraviolet laser is different, butthere are still risks, can let our eyes blind, only the infrared laser willdamage our cornea, and uv laser can damage our lens, but in both cases theresults are let us blind.
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