Using disability-adjusted life years to guide district-level eye health planning in India

Dear Editor, Disability-adjusted life years (DALYs) have emerged as an essential tool for understanding the true burden of visual impairment and blindness beyond prevalence data alone. This approach integrates both mortality and morbidity, allowing policymakers to assess the full health and economic impact of eye diseases at the population and district levels.[1] In India, where regional diversity and socioeconomic disparities influence access to eye care, DALY-based estimations can help identify the most pressing public health priorities. Modeling burden at the district level allows for more granular, actionable data, supporting equitable allocation of resources and better integration of eye health within general health systems.[2] For example, blindness and visual impairment due to cataract, refractive error, and diabetic retinopathy represent a significant proportion of extrapolated avoidable DALYs, underscoring the importance of strengthening surgical and screening programs in rural and tribal regions [Figure 1].[3]Figure 1: Daly Calculation methodsQuantifying the burden of visual disability in DALY units also provides an opportunity to link health outcomes to economic costs. Such analyses can inform cost-effectiveness evaluations, helping administrators advocate for sustained investments in high-impact interventions such as cataract surgery, refractive error correction, and early diabetic retinopathy detection [Figure 2].[4] This evidence-based framework aligns with the World Health Organization’s World Report on Vision, which emphasizes universal access to quality eye care as a global development priority.[5]Figure 2: DALY vs Economic burden by causes of vision impairment in Dahod district. DALYs: Disability-adjusted life yearsFurthermore, district-level DALY estimation can be used to monitor the effectiveness of ongoing programs like the National Programme for Control of Blindness and Visual Impairment. Regular assessments could help optimize the distribution of human resources, improve program efficiency, and ensure accountability in resource utilization. The integration of DALYs and quality-adjusted life years may further strengthen comparative health-economic analyses across different disease domains.[6] As ophthalmic services continue to expand, incorporating DALY-based assessment into routine epidemiological and planning frameworks can transform how we understand and address the burden of eye disease in India. This approach bridges clinical research and health policy, offering a sustainable path toward achieving the goals of Vision 2020 and universal eye health coverage. Data availability statement The data supporting the findings of this study will be made available upon reasonable request. Financial support and sponsorship Nil. Conflicts of interest There are no conflicts of interest.