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Quantitative Evaluation of Iris Convexity in Primary Angle Closure
- Source :
- American Journal of Ophthalmology. 143:695-697
- Publication Year :
- 2007
- Publisher :
- Elsevier BV, 2007.
-
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 r = −0.57, P 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.
- Subjects :
- Adult
Male
medicine.medical_specialty
Anterior Chamber
Eye disease
Microscopy, Acoustic
Ultrasound biomicroscopy
Iris
Glaucoma
urologic and male genital diseases
Convexity
Pupil Disorders
Trabecular Meshwork
Ophthalmology
Humans
Angle-closure glaucoma
Medicine
cardiovascular diseases
Iris (anatomy)
Aged
Retrospective Studies
Aged, 80 and over
Pupillary block
urogenital system
business.industry
Laser treatment
fungi
Age Factors
Middle Aged
medicine.disease
female genital diseases and pregnancy complications
medicine.anatomical_structure
Female
Glaucoma, Angle-Closure
business
Subjects
Details
- ISSN :
- 00029394
- Volume :
- 143
- Database :
- OpenAIRE
- Journal :
- American Journal of Ophthalmology
- Accession number :
- edsair.doi.dedup.....14a7097762a5a970f90aee703d2405c6