| prematurity | Historically, the definition of prematurity was 2500 grams (about 5 1/2 pounds) or less at birth. The current world health organisation definition of prematurity is a baby born before 37 weeks of gestation, counting from the first day of the last menstrual period (lmp). (12 Dec 1998) |
|---|
| retinopathy of prematurity | <ophthalmology, paediatrics> A bilateral retinopathy occurring in premature infants treated with excessively high concentrations of oxygen, characterised by vascular dilatation, proliferation, and tortuosity, oedema, and retinal detachment, with ultimate conversion of the retina into a fibrous mass that can be seen as a dense retrolental membrane. Usually growth of the eye is arrested and may result in microophthalmia, and blindness may occur. (03 Jul 1999) |
|---|