What is the most common FCPL method used in infants up to 12 months?

• A. Teller Acuity Cards
• B. Broken Wheel Cards
• C. Cardiff Cards
• D. Etdrs-Type Charts

Answer: (A)

The test idea here is measuring what an infant can see by using a forced-choice looking method. In this approach, two alternatives are presented and the infant’s gaze toward the patterned target indicates detection of the pattern. The observer records which side the infant tends to look at and adjusts the pattern’s fineness to find the finest stripe the infant can reliably detect. Teller Acuity Cards are designed specifically for this forced-choice preferential looking method, making them quick, straightforward to administer, and supported by extensive infant normative data. Because of their simplicity, speed, and well-established pediatric norms, they are the most commonly used FCPL method for infants up to about 12 months. Other cards exist, but they’re not as standardized or practical for this age range, whereas ETDRS-style charts require letter recognition and aren’t suitable for nonverbal infants, and Broken Wheel or Cardiff Cards are less universally adopted for FCPL in this population.