1.What is DxShield®?
Do you experience any of the difficulties below?
Wearing the equipment for many hours in medical situations causes eyestrain.
It is hard to read characters and look at screens.
Light Reflection Interferes with Your Vision
Glare from the film disrupts your work.
Your glasses and face mask reflect on the shield.
The Shield Film Fogs Up
Moisture in exhaled breath sticks to the shield, fogging it up and blocking your view.
DxShield® is a film for medical eye shield with a highly transparent anti-reflection film. Clear vision for long periods is crucial in medical settings, especially in operating theaters. This shield is ideal for the task.
Dexerials has developed this film for shields by applying anti-reflection technology used for LCD displays.
■Conventional film（PC※1 ※2）
- ※1 It uses a commercially available frame for eyeshields.
- ※2 Polycarbonate film
- ※3 ME2-C1500 (Polycarbonate base material)
2.Features of DxShield®
DxShield® has an anti-reflection layer on both sides of the film. This anti-reflection layer features nano-level tiny convexes arranged on the surface, which can be seen under magnification. It is called a moth-eye structure because it resembles the surface of a moth's eyes.
Dexerials' moth-eye type anti-reflection film provides anti-reflectivity to displays in the field of electronics field, and has now applied this technology to the material for medical shields.
Low reflection / High transmission
Our moth-eye structure has convexes smaller than the wavelengths of visible light (380 to 780 nm) to make light reflection as low as possible.
Light reflection occurs between the air and a light-receiving substance that has a refractive index different to that of air. The refractive index of this moth-eye structure changes continuously so almost no light is reflected back to your eyes.
■Principle of Reflection Reduction ｜ Light Transmission Image
■Optical Properties of Moth-eye Type Film
|Base material||PC||PET||(Reference value)
Base material only
|Thickness of base material||mm||0.16||0.11||0.19||0.13|
Test conditions for luminous reflectance
Instrument：V-650 (JASCO Corp.)
Incident angle：5° (Reflection),0° (Transmission)
Test conditions for haze values and total transmittance
Instrument：HM-150(Murakami Color Research Laboratory）
Testing standards：JIS K7136 (ISO 14782 )（Haze）, JIS K7361 (ISO 13468-1 )（Transmittance）
- * If the film surface is scratched or stained, it may not meet the above product characteristics.
Hard to fog up
Fogging of the shield is caused by water vapor contained in exhaled air sticking to the shield surface as small water droplets.
Because DxShield® uses a hydrophilic resin to form the moth-eye structure, moisture attached to the surface does not spread or wet the surface quickly, making it hard for the film to fog up.
This feature keeps the shield fog-free from the inside, providing a clear view during medical diagnosis and treatment.
■Image of water droplets on the film surface
3.Feedback after use
We asked medical professionals to use DxShield® samples and report on reflectivity, transparency, fogging, and other matters.
Period: July to August 2020
Subjects: 29 medical professionals in Japan
* Each number on the graph shows the number of subjects who gave feedback.
The contents are personal opinions and do not represent the efficacy of the product.
Please provide feedback on film reflection (reflection of surrounding light and the face mask).
Please provide feedback on the film transparency.
Please provide feedback on fogging of the film due to the exhaled air.
Please enter your opinions, impressions, and points to improve about the shield.
It is an excellent shield. I like that it doesn't fog up.（Physician）
With this shield, I no longer need to touch my face or glasses often.（Nurse）
No fogging, and transparent. I'm satisfied that it's very comfortable to use.（Dentist）
Fingerprints were a little noticeable.（Dentist）
Due to the product's special characteristics, we recommend putting on gloves before putting on this shield, as it is difficult to wipe off fingerprints and dirt.
I noticed that it looked fogged when scratched.（Dentist）
Because it is susceptible to scratches on the surface, please handle this product as a disposable item.
For more information about this product, please visit the product information page at the link below.
Medical equipment manufacturers use DxShield® as a film for eye shields and face shields.
* DxShield is registered trademark of Dexerials Corporation in Japan and other countries.