Читать книгу Infants and Children in Context - Tara L. Kuther - Страница 228

It is impossible to know whether the fetus has a sense of vision, but the fetus responds to bright light directed at the mother’s abdomen as early as 28 weeks’ gestation (Johnson & Hannon, 2015). At birth, vision is the least developed sense, but it improves rapidly. Newborn visual acuity is approximately 20/400 (Farroni & Menon, 2008). Preferential looking studies show that infants reach adult levels of visual acuity between 6 months and 1 year of age (Mercuri, Baranello, Romeo, Cesarini, & Ricci, 2007). Improvement in vision is due to the increasing maturation of the structures of the eye and the visual cortex, the part of the brain that processes visual stimuli.