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Taku Ogura, Kenji Kashiwagi, Fumihiko Mabuchi, Toshie Furuya, Tatsuya Chiba, Hiroshi Takahashi, Shigeo Tsukahara; Five Year Incidence Of Occludable Angle Among Health Examination Residents. Invest. Ophthalmol. Vis. Sci. 2012;53(14):5026.
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© ARVO (1962-2015); The Authors (2016-present)
We aimed to investigate incidence of occludable angle in five years among glaucoma health examination subjects.
Residents attending the 1st glaucoma health examination 2005 in Chuo, Yamanashi, Japan were subjects to the 2nd glaucoma health examination in 2010 after eliminating eyes with occludableangle, glaucoma, incisional ocular surgery, or others influencing the results. In addition to routine ophthalmic examinations, scanning peripheral anterior chamber depth analyzer (SPAC) was employed at both examinations. Change in SPAC evaluation, incidence of occludable angle in five years and its associated factors were investigated. Eyes judged P or S by SPAC were diagnosed to be a risky eyes.
Of 754 residents attended the 1st glaucoma health examination, 569 residents were subject to the 2nd glaucoma health examination. A total number of 350 residents took the 2nd glaucoma health examination and 331 residents 619 eyes satisfied entry criteria for the analysis. Mean age was 62.6±12.7 years and there were 87 male and 244 female subjects. SPAC grade at the 1st glaucoma health examination and the 2nd glaucoma health examination were 7.9±2.1 and 6.4±2.0, respectively (P<0.0001), which means anterior chamber depth significantly decreased in five years. The number of risky eyes significantly increased from 6.0%(37/619 eyes) to 29.7%(184/619 eyes) (p<0.0001, Chi-square test). In five years, incidence of occludable angle was 5.4% (18/331) as subjects or 5.5% (34/619) as eyes including 8 eyes (1.3%) of primary angle closure glaucoma. Lower SPAC grade, P or S judgment at the 1st glaucoma health examination, and greater change in SPAC grade were associated to developing occludable angle, but age and sex were not associated.
5.4% of senior Japanese residents developed occludable angle in five years and narrower anterior chamber and greater decreasing in the anterior chamber depth were associated developing occludable angle.
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