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Related Experiment Videos

Population based cataract epidemiological surveys utilising a photodocumentation system

K Sasaki1, M Kojima

  • 1Department of Ophthalmology, Kanazawa Medical University, Ishikawa, Japan.

Documenta Ophthalmologica. Advances in Ophthalmology
|January 1, 1994
PubMed
Summary

Cataract prevalence showed no significant differences across three Japanese survey locations. However, Indonesian subjects exhibited different cataract types compared to Japanese populations, highlighting geographical variations in eye health.

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Area of Science:

  • Ophthalmology
  • Epidemiology
  • Public Health

Background:

  • Cataract epidemiological surveys were conducted over 10 years across diverse geographical locations.
  • Population-based studies utilized advanced photodocumentation systems developed by the research department.

Purpose of the Study:

  • To compare cataract prevalence and types across different populations.
  • To evaluate the utility of photodocumentation in epidemiological research.

Main Methods:

  • Surveys included interviews and ophthalmological examinations with standardized methods.
  • Cataract classification and grading followed the Japanese Co-operative Cataract Epidemiology Study Group criteria.
  • Photodocumentation systems provided objective and comparable data on lens transparency.

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Main Results:

  • No significant differences in cataract prevalence or types were observed among three Japanese survey sites.
  • Indonesian subjects displayed a different distribution of cataract types compared to Japanese subjects.
  • Lens transparency ratios in Japan were comparable to a Dutch study.

Conclusions:

  • Photodocumentation offers objective, quantifiable data for cataract research, revealing information not visible to the naked eye.
  • Geographical variations influence cataract type distribution.
  • This sophisticated methodology, despite costs, is valuable for understanding age-related lens changes.