However, ROP might not be visible until several weeks after birth. So, premature babies at risk for ROP are usually checked by an ophthalmologist at 4 to 6 weeks after birth and again thereafter. Prior to the development of ROP in the premature infant, vascularization of the retina is "incomplete." https://kameronssohd.blgwiki.com/842719/examine_este_informe_sobre_ropa_a_juego_familia