Abstract:
PURPOSE:To determine if laser iridotomy altered the anterior segment anatomy of patients with plateau iris configuration. METHODS:Twenty eyes of 9 female and 1 male patients were imaged using an ultrasound biomicroscope within 19 weeks before and 52 weeks after laser iridotomy. Measurements obtained included the anterior chamber depth (ACD), trabecular-ciliary process distance (TCPD), iris thickness (IT), angle opening distance at 500 micrometers (AOD), iridozonular distance (IZD), and trabecular-iris angle (TIA). Comparisons of the pre- and post- iridotomy measurements were made using a two-tailed paired t test. RESULTS:Laser iridotomy elicited no statistically significant change in ACD, TCPD, IT, AOD, or TIA. However, IZD was decreased (P < 0.05) in both eyes after laser iridotomy. Configuration of the irides was flat before and after laser iridotomies. CONCLUSION:This study suggests that laser iridotomy did not alter anterior segment anatomy, probably because of the fixed anterior insertion of the iris and ciliary body in plateau iris configuration. The decrease in IZD distance may be the result of a small posterior movement of the iris due to a reduction in relative pupillary block, secondary to laser iridotomy. The small reduction in relative papillary block in plateau iris configuration does not alter the width of the anterior chamber angle as measured by AOD and TIA.
journal_name
J Glaucomajournal_title
Journal of glaucomaauthors
Polikoff LA,Chanis RA,Toor A,Ramos-Esteban JC,Fahim MM,Gagliuso DJ,Serle JBdoi
10.1097/01.ijg.0000151687.96785.03keywords:
subject
Has Abstractpub_date
2005-04-01 00:00:00pages
109-13issue
2eissn
1057-0829issn
1536-481Xpii
00061198-200504000-00004journal_volume
14pub_type
杂志文章abstract:PURPOSE:To examine the reproducibility of the new digital Goldmann applanation tonometer AT 900D (DGT) for measuring intraocular pressure and to compare its readings with those provided by the conventional analog Goldmann tonometer (AGT). METHODS:In 3 different sessions (S1, S2, and S3), 3 intraocular pressure measure...
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pub_type: 临床试验,杂志文章,随机对照试验
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