Which statement about the visual pathway development is true in infancy?

Which statement about the visual pathway development is true in infancy?

• A. Myelination is incomplete in infancy
• B. Myelination is complete at birth
• C. Myelination is complete by age 2
• D. Myelination is unrelated to acuity

Answer: (A)

The main idea here is that the visual pathway keeps maturing after birth through ongoing myelination. In infancy, the optic nerve and the visual pathways are still being myelinated, so neural transmission is slower and less synchronized. This incomplete myelination helps explain why infant visual acuity is relatively poor and gradually improves as myelination progresses over the first few years. Therefore, saying that myelination is incomplete in infancy is the best answer. It isn’t complete at birth, it takes longer than two years for full maturation, and myelination status does influence acuity by affecting how quickly and reliably visual signals are transmitted.

The main idea here is that the visual pathway keeps maturing after birth through ongoing myelination. In infancy, the optic nerve and the visual pathways are still being myelinated, so neural transmission is slower and less synchronized. This incomplete myelination helps explain why infant visual acuity is relatively poor and gradually improves as myelination progresses over the first few years. Therefore, saying that myelination is incomplete in infancy is the best answer. It isn’t complete at birth, it takes longer than two years for full maturation, and myelination status does influence acuity by affecting how quickly and reliably visual signals are transmitted.