Usefulness of peripheral anterior chamber depth assessment in glaucoma screening.

Abstract

PURPOSE:

This study was conducted to determine the usefulness of peripheral anterior chamber depth assessment in angle-closure glaucoma (ACG) screening in Japanese subjects.

SUBJECTS AND METHODS:

The subjects were 14,779 adults 40 years old or older. Eyes having peripheral anterior chamber depth that is 1/4 the peripheral corneal thickness (van Herick's classification: grade 2) and less than 1/4 the peripheral corneal thickness (van Herick's classification: grade 1) were extracted as narrow angle eyes, and those eyes were further examined.

RESULTS:

Of 14,779 subjects, 923 eyes of 505 subjects were diagnosed as narrow angle eyes (3.4%). Narrow angle eyes were observed in 4.9% of female subjects and 1.9% of male subjects, indicating a significantly higher frequency in women. The percentage of narrow angle eyes increased with age. Among the narrow angle eyes, 61 eyes of 32 subjects were diagnosed with ACG suspect (6.5%). In contrast to the frequency of ACG suspect in eyes classified as grade 1, according to van Herick's classification, being 17.9%, that in eyes classified as grade 2 was significantly lower at 5.6%.

CONCLUSION:

Since the incidence of ACG suspect increases as the peripheral anterior chamber depth decreases, caution for the peripheral anterior chamber depth is required for the ACG screening.

• Authors: K Kashiwagi, T Tokunaga, A Iwase, T Yamamoto, S Tsukahara
• Journal: Eye (London, England) (Eye (Lond)) Vol. 19 Issue 9 Pg. 990-4 (Sep 2005) ISSN: 0950-222X [Print] England
• PMID: 15467702 (Publication Type: Journal Article, Multicenter Study)

Topics

• Adult
• Aged
• Aging (pathology)
• Anterior Chamber (pathology)
• Cornea (pathology)
• Diagnostic Techniques, Ophthalmological
• Female
• Glaucoma, Angle-Closure (diagnosis, epidemiology, pathology)
• Gonioscopy
• Humans
• Intraocular Pressure
• Japan (epidemiology)
• Male
• Mass Screening (methods)
• Middle Aged