This study was done to check the association between exposure to biomass smoke from cooking fuels andi cataract, visual acuity and ocular symptoms in women.

This study was a community-based cross-sectional study among women from hilly and plain regions of Nepal. Eligible participants received an interview and a comprehensive eye assessment. Participants’ data on demographics, cooking fuel type and duration of use, and cooking habits were collected. We addressed potential confounders using the propensity score and other risk factors for ocular diseases through regression analysis.

784 participants, 30.6% used clean fuel as their primary current fuel, and the remaining 69.4% used biomass fuels. Thirty-nine per cent of the total participants had cataracts—about twofold higher in those who currently used biomass fuel compared with those who used clean fuel (OR=2.27; 95% CI 1.09 to 4.77) and over threefold higher in those who always used biomass. Similarly, the nuclear cataract was twofold higher in the current biomass user group compared with the clean fuel user group (OR=2.53; 95% CI 1.18–5.42) and over threefold higher among those who always used biomass.

The study concluded that cataract was more prevalent in women using biomass for cooking compared with those using clean fuel.