The record for the smallest premature baby to survive was held for some time by Madeline Mann, who was born at 26 weeks weighing oz (280 g) and inches (24 cm) long. This record was broken in September 2004 by Rumaisa Rahman, who was born in the same hospital at 25 weeks gestation. At birth she was eight inches (20 cm) long and weighed 244 grams ( ounces ). Her twin sister was also a small baby, weighing 563 grams (1 pound 4 ounces) at birth. During pregnancy their mother had suffered from pre-eclampsia , which causes dangerously high blood pressure putting the baby into distress and leading to birth by caesarean section . The larger twin left the hospital at the end of December, while the smaller remained there until 10 February 2005 by which time her weight had increased to kg (2 pounds 10 ounces). Generally healthy, the twins had to undergo laser eye surgery to correct visual problems, a common occurrence among premature babies.