Which pair correctly states the average axial length for full-term newborns and adults?

Which pair correctly states the average axial length for full-term newborns and adults?

• A. 16 mm and 24 mm
• B. 18 mm and 26 mm
• C. 14 mm and 22 mm
• D. 17 mm and 25 mm

Answer: (A)

Axial length is the eye’s front-to-back distance and reflects how the eye grows from infancy to adulthood. Full-term newborns average about 16 mm, while adults average around 24 mm. This makes the pairing of 16 mm for a newborn and 24 mm for an adult the best match. The other options misplace typical values for either the newborn or the adult, so they don’t align with the standard averages used in practice.

Axial length is the eye’s front-to-back distance and reflects how the eye grows from infancy to adulthood. Full-term newborns average about 16 mm, while adults average around 24 mm. This makes the pairing of 16 mm for a newborn and 24 mm for an adult the best match. The other options misplace typical values for either the newborn or the adult, so they don’t align with the standard averages used in practice.