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Background: Low vision affects around three fourths of the people globally and about half the population nationally. In order to set policies and priorities and to evaluate global eye health, it is essential to have up to date information on prevalence and causes of visual impairment. Objective: To study the prevalence and determinants of low vision among Adult Population in a Coastal Area of Villupuram District, Tamil Nadu. Materials and Methods: A community based cross sectional study was conducted between February 2013 to March 2013 among the 1034 adult individuals (>18 years old), selected by multistage cluster sampling method, who were residents of Marakkanam block, Villupuram District, Tamil Nadu. The Data was collected using a predesigned structured and validated questionnaire by interview/examination method through house to house visit by trained Post Graduates, Interns, MBBS (final year part 1 students) under the supervision of faculties from the department of Community Medicine, PIMS. Informed Consent was obtained from all the study participants. Results: Prevalence of low vision was 12.8% (CI: 10.72 -14.88) and 1% of the study population were economically blind. Low vision was more prevalent (37.3%) among > 59 yrs age group in the study population (p value=0.001).16.8% of the study population who worked in dim light were found to have low vision (p=0.032). Study respondent with diabetes mellitus and hypertension had significant low vision (p value 0.024) compared to others. Similarly dim light work, frequent travelling without helmet, watching TV/Computer in dark background found to be significant determinants of low vision among study population. Conclusion: Our study found that the Low vision is a public health problem to be noted and there is an urgent need to strengthen the existing strategies and formulate innovative strategies to halt and reduce the burden of low vision.

Prevalence and Determinants of Low Vision among Adult Population in a Coastal Area of Villupuram District, Tamil Nadu.