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Abstract #11230 Published in IGR 6-3

Ultrasound biomicroscopic analysis of iris profile changes with accommodation inpigmentary glaucoma and relationship to age

Adam RS; Pavlin CJ; Ulanski LJ
American Journal of Ophthalmology 2004; 138: 652-654


PURPOSE: To examine the effect of accommodation on iris profile in pigmentary glaucoma and its relationship to age. DESIGN: Interventional case series. METHODS: We measured change in iris profile with accommodation in 92 eyes of 92 patients with pigmentary glaucoma. RESULTS: Mean age was 42 years. Mean change in posterior iris excursion from nonaccommodated to accommodated state was 144.5 μm. (P < .001). Age was plotted against iris excursion with an estimated least-squares regression line. The estimated Pearson correlation coefficient was -0.60, (P < .001). Patients younger than 42 years of age had a mean change in excursion of 209.2 μm compared with 79.8 μm for those patients older than 42 years. (P < .001) CONCLUSION: This study found that there is a significant increase in posterior iris bowing in the accommodated state. Increasing age is associated with decreased posterior iris deviation. These findings add evidence to the theory of accommodation-induced reverse papillary block in pigmentary glaucoma.

Dr. R.S. Adam, Department of Ophthalmology, Ontario Cancer Institute, Princess Margaret Hospital, University of Toronto, Toronto, Ontario, Canada


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)



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