14.03.2016
Known as Ultraviolet Germicidal Irradiation (UVGI), this new method employs light in the ultraviolet wavelength (400nm and 10nm — shorter than visible light, longer than X-rays). Turns out, two specific frequencies of 265nm and 185nm, do most of the damage, penetrating cellular walls and disrupting DNA replication (dimerising adjacent pairs of thymine, specifically) which in turn prevents the cell from replicating or repairing itself, rendering it harmless if not outright dead.
There are two primary means of producing UV light in these two frequencies — continuous mercury vapour UV lamps and pulse xenon UV. In hospitals, surgical instruments and operating theatres aren’t the only vectors for disease transmission, patients are just as likely to pick up a secondary infection from something in the recovery room. In addition to copious amounts of hand sanitizer and bleach washes, hospitals are now turning to devices like the UV emitter from Xenex Healthcare Services. At this point, UV disinfection remains a supplementary process to chemical cleaning methods, however, the market for these devices is growing and is expected to grow from $US30 million to $US80 million in the next three years.
The ozone these things create is going to significantly shorten the lifespan of everything in the room!
Interesting fact, UV is actually universally effective at causing irreversible DNA degradation (against people, plants, animals). There are a few things that have been shown to make it more effective at killing what you want to kill (germs), and not what you don't (people) usually by pulsing the light at different timings - but that's really pretty much about exposing people to as little as possible, while still achieving enough exposure to kill all different germ varieties within that time range. With a son currently in an Intensive Care unit, who has been tested positive with VRE (google it), I can assure you that not all "super bugs" are just colds, flus or the like - some are bugs that can kill tiny children who don't have a chance to "get a bit dirty". The rate that these bugs can be transferred around a hospital is so scary (and I know, because I have to live with it, in hospital, every day with my son) that if there is actually an outbreak, I'd have serious, grave concerns for the health of some people. I'd prefer to have new technologies, like this UV tech, which can prevent the spread of these bugs, without having to give the patient yet another injection, or something else to digest, because sometimes the patients can't just keep being given the anti-biotics (something that actually leads to VRE).
I'm still not convinced that UV emitters will ever replace chemical disinfectants, but I can see it as a great addition to the team, for those spots that often get overlooked when cleaning.
A 69 year old Chicago truck driver (right) shows just how damaging the sun can be with the left side of his face having been exposed to indirect sun trough the glass of his truck while driving. When we venture outdoors, we still don’t always use SPF sunscreen, wear a hat or wear sunglasses! Peak UV exposure of the skin is commonly known to be between 10am and 2pm, with the summer months being the highest risk. For more information on how to protect your eyes properly from the sun or to have your eyes checked for early signs of sun damage, make an appointment to see Dr Catherine Tromp at Noosa Optical or call us on 07-5447-3711.


XTRAC is the only FDA-cleared, clinically proven excimer laser that gets skin clear of psoriasis—and it works fast, with many patients seeing significant improvement and long-lasting remissions.
XTRAC clears the symptoms, prolongs the remission and returns skin to a clinically healthy state in record time. Because of the shielding effect of hair, traditional UVB lamp therapy is not very effective against scalp psoriasis. XTRAC allows for simple manual separation of the hair, provides good visualization of the psoriasis and permits rapid treatment so that a whole scalp can often be treated in less than 15 minutes.
XTRAC treatments can minimize and, in many cases, even eliminate Vitligo depigmented patches. Though the laser spot size measures only 18mm x 18mm, due to rapid exposure times, relatively large, discrete areas can be treated in just five to 10 minutes, which is much quicker than the duration of conventional phototherapy light sessions.
Advertise hereUltraviolet rays (Actinic Rays)That portion of the electromagnetic spectrum immediately below the visible range and extending into the x-ray frequencies.
Yes, as long as items are in a clean, resellable condition with all original tags attached they can be returned. You can return swimwear within 30 days of purchase provided they have not been worn or washed. In most cases, NZ orders placed before midday Monday to Friday will be dispatched the same day. These infections kill around 100,000 vulnerable patients and cost the American healthcare industry $US30 billion annually. UV light is present in natural sunlight and, although the most damaging wavelengths (extreme UV from 10nm to 120nm and midrange UV from 280nm to 315nm) are filtered by our ozone layer before they penetrate the atmosphere (97 per cent of UV overall), all wavelengths can alter molecular bonds and are capable of damaging biological tissue. Many American utilities have also been using UV methods for water sterilisation (both potable and wastewater) since 1916 and the practice has garnered EPA approval.
Eighty-six per cent of the light emitted by Mercury-vapour lamps shines at 254nm, near one of the germicidal peaks, however these lamps are energy intensive and filled with a toxic gas. Perhaps, just maybe, you don't realise the difference between the technologies and didn't think that this Gizmodo article may be more informed than you, or I.
Because XTRAC delivers a highly targeted, therapeutic beam of UVB light only to areas of the skin affected by psoriasis, healthy skin surrounding the lesions stays that way.
All of which means XTRAC delivers consistently predictable results so patients experience more good days of living than bad.


Some patients, however, experience a reaction similar to sunburn or blistering at the site of the treated area and in some cases, an increase in pigmentation may occur. However, studies have reported success in treating it with the [XTRAC] 308 nm excimer laser which generates a targeted beam of UVB light. The XTRAC [308 nm] excimer laser delivers a targeted beam of UVB light and only the areas of skin affected by Vitiligo receive the laser energy.
And most importantly, XTRAC treatments achieve complete response rates faster in a higher proportion of patients. They boast a matte tortoise shell frame, with expert manufacturing to ensure they're seriously comfortable and sit where they're supposed to. Happy customerBen Good fit happy with product and shipping was fast and turned up next working day . If you are located outside of these countries please contact us to see if we can help.How much does my delivery cost? We allow 1-3 business days for delivery to NZ urban areas and 4-5 business days for rural areas.International orders will be dispatched 1-3 working days after the order is placed and will be shipped in 1- 2 business days. To combat hyper-infectious agents, like Clostridium difficile (C-diff) or Methicillin-resistant Staphylococcus aureus (MRSA), doctors are turning to a different method of disinfection to destroy bacteria by tearing their DNA apart with UV light.
The most common form of ionising damage incurred by humans is sunburn, though UV rays will burn through a cornea if given the chance. Xenon pulse lamps, flash a UV light much more energetic than what Mercury-vapour can produce, which reduces disinfection time, and utilise an intert gas instead.
In the interest of hygiene, we may refuse a refund if the above conditions have not been met.
At least in the US, facilities are very aware how much the environment can impact risk for infections. As such, they require a clear line-of-sight unobstructed by shadows, dust or fluids preferrably in a sealed environment, which allows cycling air currents to repeatedly pass under the lights.




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Comments Uvb light sources

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