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Abstract #19519 Published in IGR 9-3
Peripapillary atrophy after acute primary angle closure
Lee KY; Rensch F; Aung T; Lim LS; Husain R; Gazzard G; Seah SK; Jonas JBBritish Journal of Ophthalmology 2007; 91: 1059-1061
See also comment(s) by Martin Wax •
AIM: To determine the changes in peripapillary atrophy after episodes of acute primary angle closure (APAC). METHODS: Prospective observational study of 40 eyes in 38 patients of predominantly Chinese ethnicity. The mean (SD) intraocular pressure at the time of presentation was 51.7 (12) mmHg (median, 55 mmHg) and the mean duration of the symptoms was 37.7 (69.4) hours. A laser iridotomy was undertaken 3.2 (8.4) days after the APAC episode, leading to normalisation of intraocular pressure in all cases. Colour optic disc photographs taken at 2 and 16 weeks after APAC were examined morphometrically. Peripapillary atrophy was divided into α and β zones. RESULTS: Comparing measurements at baseline with week 16, the minimum width of the α zone (0.013 (0.056) v 0.016 (0.001) arbitrary units; p = 0.23), the maximum width of the α zone (1.11 (1.31) v 1.31 (0.79) arbitrary units; p = 0.22), the minimum width of the β zone (0.030 (0.122) v 0.033 (0.166) arbitrary units; p = 0.93), and the maximum width of the β zone (0.62 (0.94) v 0.73 (0.98) arbitrary units; p = 0.42) did not vary significantly. The mean cup to disc ratio increased from 0.56 (0.05) to 0.62 (0.07) (p < 0.0001) at the end of follow up. CONCLUSIONS: The α and β zones of peripapillary atrophy did not enlarge markedly in patients after APAC, despite an enlargement of the optic cup during a follow up of four months.
Dr. K.Y. Lee, Glaucoma Department, Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751
Classification:
2.12 Choroid, peripapillary choroid, peripapillary atrophy (Part of: 2 Anatomical structures in glaucoma)
9.3.1 Acute primary angle closure glaucoma (pupillary block) (Part of: 9 Clinical forms of glaucomas > 9.3 Primary angle closure glaucomas)