Ultrasound biomicroscopic measurement of anterior chamber angle in premature infants
a Department of Ophthalmology, Amagasaki
Hospital, Amagasaki, Japan, b Department of
Ophthalmology and Visual Science, Graduate School of Medicine Kyoto
University, Kyoto, Japan, c Department of Ophthalmology, Kobe City General
Hospital, Kobe, Japan
Correspondence to: Hiroshi Kobayashi, Department of Ophthalmology, Amagasaki Hospital, 1-1-1 Higashi-daimotsu-cho, Amagasaki, 660, Japan.
Accepted for publication 10 March 1997
AIM
To establish normative values for the anterior
segment in premature infants in relation to postconceptional age and
birth weight.
METHODSAnterior segments were measured in 39 premature infants, 25 to 39 weeks' gestational age by use of
ultrasound biomicroscopy and a muscle hook with topical anaesthesia.
RESULTSAnterior chamber depth, trabecular-iris
angle, angle opening (trabecular-iris) distances at 250 and 500 µm
from the scleral spur, and the thickness of the thickest part of the
iris showed linear increases in relation to postconceptional age and
birth weight.
CONCLUSIONSUltrasound biomicroscopy is a powerful
tool for obtaining precise images and measurement of the anterior
segment in preterm neonates. Normative values were established for
anterior segment dimensions in relation to postconceptional age and
birth weight.
© 1997 by British Journal of Ophthalmology
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