High resolution ultrasonography in eyes with angle-closure glaucoma associated with the cicatricial stage of retinopathy of prematurity.
BACKGROUND
Angle-closure glaucoma in children at the cicatricial stage of retinopathy of prematurity (ROP) has been thought to be caused by the anterior displacement of the lens-iris diaphragm resulting from contraction of a retrolental fibrous membrane. Other possible mechanisms include pupillary block and ciliary block.


METHODS
Three patients (three eyes) at the cicatricial stage of ROP with angle-closure glaucoma were examined by high-resolution ultrasonography before and after peripheral iridectomy.


METHODS
High-resolution ultrasonography preoperatively showed that the angle was closed. A retrolental fibrous membrane was attached behind the lens. After the iridectomy, ultrasonography showed an open angle, and the intraocular pressure was normal.


CONCLUSIONS
The angle closure in our three patients was caused mainly by a pupillary block and could be treated by peripheral iridectomy.
Suzuki
Atsuko
A
Department of Ophthalmology, Nagoya University School of Medicine, Aichi, Japan.
Kondo
Nagako
N
Terasaki
Hiroko
H
D000869:Anterior Eye Segment / Q000000981:diagnostic imaging*; D002924:Ciliary Body / Q000000981:diagnostic imaging*; D005865:Gestational Age; D015812:Glaucoma, Angle-Closure / Q000000981:diagnostic imaging* / Q000209:etiology / Q000601:surgery; D006801:Humans; D007231:Infant, Newborn; D019102:Infant, Very Low Birth Weight; D007429:Intraocular Pressure; D032801:Iridectomy; D007498:Iris / Q000000981:diagnostic imaging* / Q000601:surgery; D012178:Retinopathy of Prematurity / Q000150:complications / Q000000981:diagnostic imaging*; D014463:Ultrasonography