Goggles are optional. Irradiate the skin and maintain a distance of 3 ±0.5 cm
Confirmation of radiation dose: According to the doctor’s recommendation, according to the radiation intensity of the phototherapy instrument, the exposure time required for the appendix can be found.
View the clock, note the start time, and calculate the end time;
Place the irradiator over the surface of the problematic skin and turn the power switch;
The time has passed, turn off the switch, and disconnect the power.