Iridociliary apposition in plateau iris syndrome persists after cataract extraction☆
Accepted 15 August 2002.
Abstract
Purpose
To evaluate the ultrasound biomicroscopic appearance of the anterior segment before and after cataract extraction in eyes with plateau iris syndrome and to determine the effect of postoperative zonular relaxation on ciliary body position.
Design
Interventional case series.
Methods
Eyes with plateau iris syndrome scanned before and after cataract extraction between January 1994 and September 2001 were enrolled. The iridociliary relationship and the anterior chamber depth at a distance of 3 mm from the scleral spur were assessed.
Results
We examined six eyes of six patients. Mean patient age was 74.2 ± 6.4 years (standard deviation [SD]) (range, 65–81 years). Mean refractive error was + 1.0 ± 3.9 diopters [D] (range, −5.75–+5.50), and mean axial length was 21.85 ± 0.77 mm (range, 20.90–22.95 mm). All eyes had undergone laser iridotomy and argon laser peripheral iridoplasty before cataract extraction. Ultrasound biomicroscopy examination revealed a narrow angle and absence of a ciliary body sulcus in all eyes with focal areas of iridotrabecular apposition in three eyes. Following cataract extraction, the anterior chamber depth increased (P = .0006, paired t test), while the iridociliary contact remained unchanged.
Conclusions
Iridociliary apposition persists after cataract extraction in plateau iris syndrome. Whether the cause is congenital or acquired, or both, remains to be determined.
aDepartment of Ophthalmology The New York Eye and Ear Infirmary, New York, New York, USA (H.V.T., R.R.)
bDepartment of Ophthalmology, Manhattan Eye, Ear, and Throat Hospital, New York, New York, USA (J.M.L.)
cDepartment of Ophthalmology, New York University School of Medicine, New York, New York, USA (J.M.L.)
dDepartment of Ophthalmology, New York Medical College, Valhalla, New York, USA (R.R.)
Inquiries to Robert Ritch, MD, Glaucoma Service, Department of Ophthalmology, The New York Eye and Ear Infirmary, 310 East 14th Street, New York, NY 10003, USA; fax: (212) 420-8743
☆ This work was supported in part by The New York Eye and Ear Infirmary Department of Ophthalmology Research Fund, New York, NY (Dr. Tran) and the Donald Engel Research Fund of the New York Glaucoma Research Institute, New York, NY.
ABSTRACT