The human retina is not fully developed at birth. Several anatomic changes occur postnatally in the developing retina including an increase in cone density and elongation of photoreceptor outer-segments. The functional changes that occur in the retina with maturation during the fi rst year of life can be evaluated with full-fi eld electroretinogram, which represents the summed activity of the distal retina in response to light. Functional maturation of the retina is addressed in preterm infants assessed by electroretinography.
Vision; Retina; Premature infants