Format

Send to

Choose Destination
Am J Ophthalmol. 2007 Apr;143(4):695-7. Epub 2006 Dec 19.

Quantitative evaluation of iris convexity in primary angle closure.

Author information

1
Department of Ophthalmology, Kobe City General Hospital, Chuo-ku, Kobe, Japan. a-nonaka@pb3.so-net.ne.jp <a-nonaka@pb3.so-net.ne.jp>

Abstract

PURPOSE:

In eyes with primary angle closure (PAC), we quantitatively evaluated anterior bowing of the iris by means of ultrasound biomicroscopy (UBM).

DESIGN:

Retrospective, observational, and consecutive case series.

METHODS:

A total of 203 phakic eyes with PAC that had not undergone any surgical or laser treatment were included. Using UBM, we measured anterior chamber depth (ACD) and iris convexity (IC): the maximum distance from the posterior surface of the iris to the iris plane passing through the pupillary margin of the iris and iris root.

RESULTS:

The average IC was 0.22 +/- 0.1 mm, although there was considerable individual variation. The IC value was correlated weakly, albeit significantly, with age (r = 0.22, P < .01), and strongly with ACD (r = -0.57, P < .0001).

CONCLUSIONS:

In eyes with PAC, older age and a more shallow ACD appear to be important causes of increased forward bowing of the iris resulting from pupillary block.

PMID:
17386283
DOI:
10.1016/j.ajo.2006.11.018
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center