That depends, especially on the care with which the parents look for subtle changes in the newborn infants. Oftentimes, the nystagmus is not present at birth but develops between three weeks and eight weeks after birth. The sensitivity to sunlight may not be appreciated for many months, and the reduced visual acuity may not be detected until an infant is cooperative enough to understand the task of recognizing figures, numbers, and other objects. However, in a family with Nettleship-Falls ocular albinism in which there are other known affected males and the mother is known to be a carrier, examination of a male infant at or shortly after birth should clarify whether any individual male is or is not affected.