Which screening is performed earlier than formal acuity testing in well-child care?

• A. Red reflex screening.
• B. Color vision testing.
• C. Formal acuity testing.
• D. Dilation testing.

Answer: (A)

Focusing on what can be checked without requiring a child’s cooperation, red reflex screening is done first. It’s a quick, objective look at each pupil using a light, aiming to see a bright, red reflection from the retina in both eyes. This simple test can be performed as early as infancy and is essential for spotting serious but treatable conditions like congenital cataracts, media opacities, or retinoblastoma long before a child can participate in vision testing.

Formal acuity testing, by contrast, relies on the child’s ability to understand and respond to symbols or letters, which typically isn’t reliable until around age 3–4 or later, and often 5 years old for robust screening. Color vision testing and dilation are either age-dependent or specialized procedures not routinely used as early well-child screenings. Therefore, the red reflex screen is the screening performed earlier in well-child care.