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Abstract #13035 Published in IGR 7-3
Usefulness of peripheral anterior chamber depth assessment in glaucoma screening
Kashiwagi K; Tokunaga T; Iwase A; Yamamoto T; Tsukahara SEye 2005; 19: 990-994
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.
Dr. K. Kashiwagi, Department of Ophthalmology, University of Yamanashi, Faculty of Medicine, Tamaho, Yamanashi, Japan. kenjik@yamanashi.ac.jp
Classification:
1.6 Prevention and screening (Part of: 1 General aspects)