Phototherapy

Even in ancient times, light was found to be an effective medical treatment

Light provides many benefits to man, not the least of which are energy, heat, and food but it has long been known to have many medicinal qualities as well.

Phototherapy, also known as light therapy, is treatment by application of either broad-spectrum or a specific waveband of light, and has its roots in antiquity.

The first deliberate use of light as a form of medical treatment can be traced back around 1400 BC to India where sufferers of vitiligo, a skin condition causing loss of pigmentation, were successfully treated with exposure to sunlight after certain plant extracts were administered that contained skin photosensitizing compounds. These compounds, called psoralens, made their exposure to UVA more effective at re-pigmentation.

The ancients didn’t know why it worked, but they knew it worked. Over the centuries since, scientific research has taken these first simple beginnings and transformed them into sophisticated forms of widely accepted treatments for numerous medical, psychological, and cosmetic conditions.

Phototherapy has many benefits but requires careful control.

Phototherapy has given practitioners and patients new options for the treatment of difficult chronic disorders and problematic conditions such as dermatitis, psoriasis, common acne, eczema, and seasonal affective disorder as well as vitiligo, neonatal jaundice, delayed sleep-phase syndrome, polymorphous light eruption, and mycosis fungoides among others.

In many cases, phototherapy treatments have been found to be as or more effective than traditional procedures while less expensive and typically faster. The demands of a busy world have given way to more powerful phototherapy treatments, particularly narrowband UVB systems, capable of delivering the required exposure in the shortest amount of time, making phototherapy an even more convenient treatment option.

With decreased exposure times and fewer required visits, these treatments are more convenient than ever and can now fit around a patients schedule or even done by the patient themselves in their own home, office, or car due to advances in smaller, safer, and easier to use portable and home-use phototherapy light sources.

However, with these benefits come certain considerations, while ultraviolet light (UVA and UVB), infrared (IR), and even blue or red visible light have all been shown to be effective at treating many conditions, also pose certain health risks due to the potential damage to the skin or eyes from over exposure, making it critical to monitor both the wavelength of light and the amount of exposure given to a patient.

Light measurement instrumentation to match any phototherapy application.

International Light Technologies (ILT) has developed a line of reliable, highly accurate light measurement systems capable of both research and development or clinical use and available to match the wide variety of light sources used in modern phototherapy treatments.

ILT meters come with NIST traceable, ISO 17025 accredited calibrations in units of Watts, Lumens, Watt/cm2, lux and foot-candles as well as full spectrum analysis.

Input optics, including small cosine receptors, integrating spheres, narrow beam adapters and apertures (for testing uniformity) can be added to ILT systems making them the most versatile systems available.

ILT engineers and technical support staff are available to customize systems to the unique requirements of our customers.

Use the table below to identify the system (meter + detector) that meets your specific application.  Use the table to find the spectral range you wish to measure.  The table can be filtered to show our meters by type, (e.g., hand-held), as well as searching on the minimum and maximum spectral range you wish to measure.  The tables can also be sorted to group systems by meter type, spectral range, measurement range, and units.  Click the product link of the system to view it's details.

Need assistance?  Contact us using the form below, or by calling us at 978-818-6180.

* All Radiometers/Photometers/Spectroradiometers are NIST Traceable.
* If units of measure are not shown please contact us (empirical units also available i.e.
fc, fL, nits, lm/ft²). 

Application Common Sources Meter Type Spectral Range Measurement Range Units Product
Lamp Spectral Analysis Any Low Profile 200-400 nm Customized Spectrum W/m²/nm ILT950UV & ILT950 Spectroradiometers
UVA Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Handheld 315-390 nm 1 – 19.99 mW/cm² ILT72CE UVA Radiometer
UVA Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Bench-top/Lab 315-390 nm 2.67e-10 – 0.267 W/cm² ILT1700, SED033/UVA/W
UVA Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Handheld 315-390 nm 2e-8 – 0.2 W/cm² ILT2400, SED033/UVA/W
UVB Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Handheld 275-325 nm 1 – 19.99 mW/cm² ILT73CE UVB Radiometer
UVB Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Handheld 275-325 nm 1 – 19.99 mW/cm² ILT73-NB UVB Radiometer
UVB Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Bench-top/Lab 265-332 nm 3e-7 – 0.1 W/cm² ILT5000, SED240/UVB-1/W
UVB Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Bench-top/Lab 265-332 nm 2e-7 – 0.1 W/cm² ILT1700, SED240/UVB-1/W
UVB Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Handheld 265-332 nm 6e-6 – 0.1 W/cm² ILT2400, SED240/UVB-1/TD
UVB Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Bench-top/Lab 265-310 nm 5e-9 – 1 W/cm² ILT5000, SED270/UVB-2/TD
UVB Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Handheld 265-310 nm 3e-7 – 1 W/cm² ILT2400, SED270/UVB-2/TD
UVB Measurement - Eczema, Vitiglio, Psoriasis Light Treatment Any Low Profile 265-310 nm 3e-7 – 1 W/cm² ILT1270/UVB-2/TD
Narrow UVB Source, Philips UVB Lamp Any Bench-top/Lab 312 nm 2e-8 – 20 W/cm² ILT5000, SED005/TLS312/W
Narrow UVB Source, Philips UVB Lamp Any Bench-top/Lab 312 nm 2e-8 – 20 W/cm² ILT1700, SED005/TLS312/W
Narrow UVB Source, Philips UVB Lamp Any Handheld 312 nm 2e-6 – 20 W/cm² ILT2400, SED005/TLS312/TD
Bili Blankets, Bili Belts, Bili Light Sources, Bilirubin Light Source, Jaundice Treatment, Hyperbilirubinemia Any Handheld 425-475 nm 1 – 199.9 µW/cm²/nm ILT74CE Bili-Light Meter
Bili Blankets, Bili Belts, Bili Light Sources, Bilirubin Light Source, Jaundice Treatment, Hyperbilirubinemia Any Spectrometer 250-1050 nm Customized Spectrum W/m²/nm ILT950 Spectroradiometer
Bili Blankets, Bili Belts, Bili Light Sources, Bilirubin Light Source, Jaundice Treatment, Hyperbilirubinemia Any Handheld 410-485 nm 2e-7 – 3 W/cm² ILT2400, SCD144
Bili Blankets, Bili Belts, Bili Light Sources, Bilirubin Light Source, Jaundice Treatment, Hyperbilirubinemia Any Handheld 370-515 nm 8e-9 – 0.1 W/cm² ILT2400, SED033/TBLU/W
Bili Blankets, Bili Belts, Bili Light Sources, Bilirubin Light Source, Jaundice Treatment, Hyperbilirubinemia Any Bench-top/Lab 370-515 nm 1.4e-10 – 0.286 W/cm² ILT5000, SED033/TBLU/W
Bili Blankets, Bili Belts, Bili Light Sources, Bilirubin Light Source, Jaundice Treatment, Hyperbilirubinemia Any Bench-top/Lab 370-515 nm 2.86e-10 – 0.286 W/cm² ILT1700, SED033/TBLU/W
Lamp Spectral Analysis Any Handheld 300-780 nm 0.1 – 500 W/m2 ILT350 Spectroradiometer