Certified Ophthalmic Technician (COT) Test 2025 – 400 Free Practice Questions to Pass the Exam

Confrontation testing is the most widely used method of visual field screening that requires no special equipment because it is simple, quick, and can be performed in various clinical settings. In this test, the examiner and the patient face each other, and the examiner uses their hands or fingers to assess the patient’s peripheral vision by asking them to identify when they see the examiner's fingers or hands entering their visual field from different angles. This method provides immediate feedback on gross visual field defects and is especially useful in primary care or emergency settings where sophisticated equipment may not be available.

The other methods listed, such as automated perimetry and Goldmann perimetry, require specialized equipment and often a dedicated testing space, making them less accessible for initial screenings. Hess charts, while useful for evaluating binocular vision and eye movement, do not serve as a standard visual field screening method.