Characteristics of Cataracts in the Chinese Singaporean
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概要
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Purpose: To conduct an epidemiological survey of cataracts and examine the characteristics of lens opacities in Chinese Singaporeans. The results are then compared with those from two similar surveys previously done in Japan in Noto Area, Honshu, and Amami, Kyushu, respectively.Subjects and Methods: 468 subjects of*50 years of age, who responded to the invitation to participate, were examined. Examination principally included photo-documentation of the anterior and posterior segments of both eyes. Evaluation and grading of lens opacities were done using graphical analysis of Scheimpflug and retro-illumination images. Inter-group comparisons were based on statistical analysis of cataract prevalence and distribution.Results: The prevalence of clear lenses decreased with aging with no significant difference between males and females - a finding common to Singapore and the two Japanese study groups. The prevalence of cataracts (or lens opacities of Grade II and above) in 60-79 year-old Singapore subjects was significantly higher than Noto and Amami subjects in the same age group. Further, cortical opacity was the main type in Singapore subjects in their 50s and which was significantly higher than Noto subjects of the same age group. In all age groups, the distribution and prevalence of both nuclear and subcapsular types in the Singapore group were higher than the two Japanese study groups.Conclusions: Cataracts in Chinese Singaporeans are characterized by a high prevalence of nuclear opacities which was generally seen in tropics and sub-tropics. Our study also suggested the involvement of solar-UV in cortical cataracts as well as that of additional risk factors, such as environmental temperature and race, in nuclear and subcapsular cataract formation.J Epidemiol, 2001 ; 11 : 16-23
- 日本疫学会の論文
著者
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Kojima Masami
金沢医科大学 眼科学
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Kojima Masami
Kanazawa Medical University
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Takahashi Nobuo
金沢医科大学 眼科学
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Cheng Hong
Singapore Eye Research Institute
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SASAKI Hiroshi
Dept. Med. Biophys. Radiat. Biol., Kyushu Univ.
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SHUI Ying
Dept. of Ophthalmology, Kanazawa Medical University
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KOJIMA Masami
Dept. of Ophthalmology, Kanazawa Medical University
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CHEW Sek
Dept. of Hygiene and Public Health, Tokyo Women's College, Deceased
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ONO Masaji
Environmental Health Science Division, National Institute for Environmental Studies
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KATOH Nobuyo
Dept. of Hygiene and Public Health, Tokyo Women's College
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CHENG Hong-Ming
Singapore Eye Research Institute
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TAKAHASHI Nobuo
Dept. of Ophthalmology, Kanazawa Medical University
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SASAKI Kazuyuki
Dept. of Ophthalmology, Kanazawa Medical University
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Sasaki Kazuyuki
Visual Science Course Department Of Rehabilitation Tohoku Bunka Gakuen University
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Chew Sek
Dept. Of Hygiene And Public Health Tokyo Women's College Deceased
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Shui Ying
Dept. Of Ophthalmology Kanazawa Medical University
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Katoh Nobuyo
Dept. Of Hygiene And Public Health Tokyo Women's College
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Ono Masaji
Environmental Health Science Division National Institute For Environmental Studies
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Sasaki Hiroshi
Department Of Ophthalmology Kanazawa Medical University
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Sasaki Kazuyuki
Dept. of Ophthalmology, Kanazawa Madical University
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Takahashi Nobuo
Dept. of Ophthalmology, Kanazawa Madical University
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