advertisement
Abstract #15680 Published in IGR 2-3
Ultrasound biomicroscopic analysis of pseudophakic pupillary block glaucoma induced by Sömmering's ring
Kobayashi H; Hirose M; Kobayashi KBritish Journal of Ophthalmology 2000; 84: 1142-1146
AIM: To perform ultrasound biomicroscopic analysis of pseudophakic pupillary block glaucoma induced by lens capsule and a Sömmering's ring and its resolution, and to elucidate the pathophysiology of this glaucoma. METHODS: A woman with pseudophakic pupillary block glaucoma underwent successful Nd:YAG laser photodisruption of the lens capsule through a laser iridotomized coloboma with resolution of the pupillary block. The Humphrey ultrasonic biomicroscope model 840 was employed to observe the anterior segment before and after laser photodisruption. RESULTS: Ultrasound biomicroscopic examination revealed the intraocular lens (IOL) was displaced forward, shallowing the central anterior chamber. The anterior hyaloid face was relatively posterior to the posterior capsule. The iris was in apposition to the anterior capsule, which was in touch with the IOL optics. A massive Sömmering's ring, which extended from the IOL optics to the ciliary processes, was displaced anteriorly. The Sömmering's ring consisted of several tightly packed layers. The ciliary processes rotated anteriorly. After Nd:YAG laser photodisruption of the capsule, ultrasound biomicroscopic images showed the resolution of the pupillary block and the anterior rotation of the ciliary process. The Sömmering's ring moved posteriorly, and the layers in the ring became loose. CONCLUSIONS: A massive Sömmering's ring may one of potential causes of pupillary block after cataract surgery. Ultrasound biomicroscopy is potentially useful as a non-invasive diagnostic technique for clinical diagnosis and differentiation between Sömmering's ring-induced pupillary block glaucoma and other forms of pupillary block.
Dr. H. Kobayashi, Department of Ophthalmology, Amagasaki Hospital, 1-1-1 Higashi-daimotsu-cho, Amagasaki, Hyogo 660-0828, Japan
Classification:
6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
9.3.10 Other (Part of: 9 Clinical forms of glaucomas > 9.3 Primary angle closure glaucomas)
