Doctors are literally the saviors of mankind and as such they have rather special and specific requirements for all their supplies. One of the most important things that a doctors' supplies must fulfill is that they must be easy to put on and easy to take off. This fact is very important as they are designed to have the easiest method of putting on and taking off so that the doctor's precious time and the patient's precious time is not wasted simultaneously in putting on and taking off accessories and supplies.
One important thing that doctors must always have on during a surgery is their hat. A surgical scrub hat is among the most important preventive pieces of equipment that a doctor should wear during a surgery. The main function of a surgical scrub hat is to minimize the risk of any debris falling into the open wound of the patient from the doctor's head. Another important function that is fulfilled by the surgical scrub hat is that it prevents any falling hair from the doctor's head going into the open wound of the patient and also helps to prevent infections in the same manner.
These hats must usually be worn by every single person who comes in the near vicinity of the open wound of the patient and the operating table as falling hair and debris are not the only way that infections and pathogens can be introduced into a patient's open wounds and surgical apertures. There is also another possibility that the pathogens may fall from the head onto the equipment table and the equipment and therefore will be transferred into the patient when the doctor uses the equipment.
This is why it is best to seal off as many sources of pathogens as possible during a surgery and this is why it is important to wear a surgical scrub hat all the time during a surgery.