Delayed visual maturation.
D002648:Child; D002986:Clinical Trials as Topic; D002658:Developmental Disabilities / Q000503:physiopathology*; D006801:Humans; D007223:Infant; D011446:Prospective Studies; D013997:Time Factors; D014786:Vision Disorders / Q000503:physiopathology*; D014792:Visual Acuity / Q000502:physiology