Final answer:
A method of testing visual acuity in infants is through the use of the Snellen chart. Another method is testing the extent of the visual field. These tests can be conducted in an optometry office by a trained professional.
Step-by-step explanation:
A method of testing visual acuity in infants is through the use of the Snellen chart. The Snellen chart is a chart that presents standard Roman letters in a variety of sizes to assess visual acuity. By determining the smallest letters that can be seen at a certain distance, visual acuity can be measured. Another method is testing the extent of the visual field by establishing the boundaries of peripheral vision. This can be done by asking the patient when fingers are no longer visible without moving their eyes to track them. These tests can be conducted in an optometry office by a trained professional.