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Abstract #6083 Published in IGR 2-2
Ultrasound biomicroscopy in pigmentary glaucoma
Pillunat LE; Boehm A; Fuisting B; Kohlhaas M; Richard GOphthalmologe 2000; 97: 268-271
PURPOSE: To evaluate the anatomical relationships of the iris in pigmentary glaucoma before and after laser iridotomy, and to evaluate the effect on intraocular pressure. METHODS: Ultrasound biomicroscopy (UBM, Humphrey-Zeiss) of the anterior segment was performed in 28 eyes of 28 patients (20 male, eight female, mean age 43 years, mean untreated IOP 24.3 mmHg) with pigmentary glaucoma before and after laser iridotomy. The slope of intraocular pressure was documented. Mean follow-up was nine months. For statistical analysis the Wilcoxon test was used. RESULTS: Ten of 28 eyes showed iridozonular contact and concavity of the midperipheral iris. Laser iridotomy resulted in a significant pressure drop (p < 0.05) in these ten eyes (24.6-18.3 mmHg). However, 18 eyes did not show iridozonular contact and intraocular pressure did not drop sufficiently (p > 0.05; 25.1-23.1 mmHg) after laser iridotomy. CONCLUSIONS: The results show that iridozonular contact does not exist in every patient with pigmentary glaucoma. Therefore, it seems possible that more than one pathogenic mechanism is involved in pigmentary glaucoma. In patients with iridozonular contact, however, laser iridotomy significantly reduces intraocular pressure. LA: German
Dr. L.E. Pillunat, Universitäts-Augenklinik Hamburg, Hamburg, Germany
Classification:
6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
9.4.3.1 Pigmentary glaucoma (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.3 Glaucomas associated with disorders of the iris and ciliary body)
