Goniometry with Slitlamp-adapted Optical Coherence Tomography in Acute Angle Closure Glaucoma
Karandish A., Wirbelauer C., Häberle H., Pham D. T.
Klinik für Augenheilkunde, Vivantes, Klinikum Neukölln, Berlin
Purpose: The visualisation of anterior chamber angle is an important diagnostic method in patients with glaucoma. In this study optical coherence tomography (OCT) was used to image the angle width, the iris configuration and the iris thickness in patients with acute angle closure glaucoma.
Method: 13 eyes of 11 patients suffering from acute angle closure glaucoma were studied with slitlamp-adapted OCT. All patients were treated with YAG iridotomy. The angle width [°], the angle opening distance (AOD) [µm] and the iris thickness [mm] were measured with OCT. The configuration of the iris was classified in convex, plane or concave.
Results: The mean angle width was preoperatively 5,1±5,0° and enlarged significantly (p=007) to 10,4±5,5° postoperatively. The AOD changed from 71±55 mm (0-157mm) preoperatively to 143 ±74mm (0-256 mm) postoperatively (P<0,001). The mean iris thickness was 338±33 mm. With the exception of two eyes the predominant iris configuration changed from convex to plane.
Conclusions: Slitlamp-adapted OCT allowed to visualize and assess noninvasively the anterior chamber angle region in patients with acute angle closure glaucoma. Our results suggest that OCT could improve the evaluatio
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