According to sterile technique guidelines, what happens when a sterile field is out of the range of vision?

When a sterile field is out of the range of vision, it becomes contaminated because maintaining a sterile field relies on continuous observation and control of the area. The principles of sterile technique dictate that items must remain in sight to ensure that no contact occurs with non-sterile surfaces or individuals, which could introduce potential pathogens. If the sterile field is not visible, there is no way to ensure that it has been preserved and remains free from contamination, as environmental factors and unintentional contact can compromise the sterility even if it appears untouched. Consequently, sterile fields need to be constantly monitored and should never be left unattended or out of sight to uphold the standards of asepsis.