Premature birth linked with double rings in infants
Low birth weight and gestational age were found to influence the form of the optic disc in infants, according to a study.
Mean gestational age was 28.3 weeks, and mean birth weight was 1,135 grams.
All but one of the optic discs had a vertical-oval form. The negative correlation between the form of the optic disc and birth weight and gestational age was significant, according to the authors (P = .003, P = .03, respectively).
The mean vertical diameter/horizontal diameter ratio was 1.28.
Visible disc cupping was found in 89% of eyes, and a double ring was found in 75%.
Further investigation of the individual courses and time points of optic disc development in the first years of life is warranted, the authors said.