The protocol for the study is identical to usual clinical practice. Following informed consent, two followup visits are conducted: one 2 to 4 weeks after the first examination and the other when the child is between 28 and 32 weeks of age. The examinations will be identical to the pediatric ophthalmologist's usual routine, and no additional procedures are being performed specifically for the study. Management of refractive error and amblyopia is left to the ophthalmologist's discretion. A sample size of 150 has been projected for the study.