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Kazuyoshi Kitamura, Tatsuya Chiba, Joji Tanabe, Kenji Kashiwagi; Eleven-year change of anterior chamber configuration among health examination subjects. Invest. Ophthalmol. Vis. Sci. 2017;58(8):4807.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate change of anterior chamber configuration and its associated factors through a community-based longitudinal study over 11-year period.
Japanese residents who underwent two glaucoma health examinations held in 2005 and 2016 were enrolled. Of the participants of the first glaucoma health examination (first examination), those who satisfied exclusion criteria such as having eyes with angle closure, glaucoma, incisional ocular surgery, or other conditions that could influence the results were eliminated from the second glaucoma health examination (second examination). In addition to routine ophthalmic examination, a scanning peripheral anterior chamber depth analyzer (SPAC) was employed to investigate the anterior chamber configuration. The change of SPAC grade over 11-year period, the incidence of angle closure over the 11-year period and its associated factors were investigated.
Of the 915 participants of the first examination, 129 participants (31males and 98 females, age: 67.8±10.3 years), or 223 eyes were analyzed after eliminating eyes matching exclusion criteria. Mean SPAC grade significantly decreased 7.4±1.9 at 2016 from 8.2±1.9 at 2005 (P<0.001). In the 11-year period, the incidence of angle closure was 4.0 % of participants.
Peripheral anterior chamber depth showed significant decrease over 11-year period. AC was developed by 4.0 % of senior Japanese residents over the 11-year period.
This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.
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