What is the most widely used method of visual field screening that requires no special equipment?

Confrontation testing is the most widely used method of visual field screening that does not require any special equipment. This technique involves a simple interaction between the examiner and the patient, where the examiner presents objects or fingers in various positions within the patient's peripheral vision. The patient is asked to identify or respond to these stimuli, allowing the examiner to assess any potential visual field defects.

Confrontation testing is particularly useful in clinical settings where quick assessments are needed without the availability of specialized devices. It effectively helps identify gross visual field loss or abnormalities, making it a practical and efficient screening tool.

In contrast, the other methods, such as automated perimetry, kinetic perimetry, and static perimetry, typically involve specialized machines and equipment that provide more detailed and quantitative measurements of the visual field but are not as accessible for immediate or preliminary screening purposes.