Feb 03,2021
Summary of fogging causes and anti-fogging skills for goggles
Goggles are an eye protection device used to close or protect the eyes. They are mainly used to prevent infectious substances such as particles, water, chemicals, blood, and body fluids from invading the eyes. Practice has proved that wearing goggles is one of the important measures to directly prevent blood-borne occupational exposure and occupational infection.
GogglesIt is an eye protection device used to close or protect the eyes. It is mainly used to prevent particles, water, chemicals, blood, body fluids and other infectious substances from invading the eyes. Practice has proved that wearing goggles is one of the important measures to directly prevent blood-borne occupational exposure and occupational infection.
GogglesIt will fog when wearing, which will seriously affect the eyesight of medical staff, increase the difficulty of operation and increase the risk of pollution. It not only affects the accuracy of medical staff's operation, but also increases psychological pressure.
In view of the fogging phenomenon of goggles, by consulting the recent data, summarizesGogglesThe causes of fog and anti-fog skills.
Cause analysis:
1. For secondary protection, N95 or N99 masks with good air tightness should be used. However, with the extension of wearing time, with the operation and communication, the air tightness of the mask is reduced, resulting in part of the gas escaping from both sides of the bridge of the nose, from the upper edge of the mask into the goggles, so thatGogglesMist, reduced visibility, line of sight blocked.
2. When there is a significant temperature difference between the material and the environment, the water mist will condense on the surface. This is because the temperature decreases and the saturated vapor pressure of water decreases below the partial pressure of water vapor in the air, causing the water vapor to condense into water droplets.
But the outbreak occurred in the winter, the work area and ward air conditioning system shut down. Researcher Zhang Liubo pointed out: If a new coronary pneumonia patient or suspected patient is found within the gas supply range, the air conditioner should be turned off in time, disinfected, and used after the assessment is qualified.
When medical personnel operate under secondary protection, the body temperature is higher than the indoor temperature, and the temperature difference between the inner and outer layers of the goggles is large, which is easy to causeGogglesFogging inside.
