{
  "abstract": "Background The global burden of blindness and vision loss continues to increase, yet comprehensive analyses of underlying causes remain limited. This study estimated the global and regional burden of blindness-related diseases from 1990 to 2021 and projected trends to 2050 to inform public health strategies.Methods We analysed data from the Global Burden of Disease Study (GBD) 2021 to estimate the prevalence and disability-adjusted life years (DALYs) rates of blindness and vision loss, focusing on six major causes, including glaucoma, cataract, age-related macular degeneration, refraction disorders, near vision loss and other vision loss. We quantified the contribution of risk factors, and future trends were projected to 2050 using GBD’s forecast framework.Results In 2021, the global age-standardised prevalence and DALY rates of blindness were 15 784.3 (95% uncertainty interval (UI), 12 761.4–19 502.3) and 342.8 (224.2–503.6) per 100 000. Although global age-standardised DALY rates remained statistically stable between 1990 and 2021, regional trends varied numerically. Southern sub-Saharan Africa recorded the highest age-standardised prevalence rate in 2021 at 16 741.4 (13 187.8–21 129.5), whereas the highest DALY rate was observed in South Asia at 497.1 (345.3–691.6). While the overall burden of blindness did not differ significantly by sex, glaucoma showed a higher burden in males. From 1990 to 2021, cataract DALY rates attributable to household air pollution decreased by 38.4%, with projections showing stable age-standardised rates through 2050.Conclusions As populations age, the global burden of vision loss is projected to grow, with particularly high impact in lower-sociodemographic index regions such as Southern Sub-Saharan Africa and South Asia.",
  "authors": [
    {
      "affiliations": [
        "Department of Medicine, Kyung Hee University College of Medicine, Seoul, Korea (the Republic of)"
      ],
      "name": "Dongjin Yeo"
    },
    {
      "affiliations": [
        "Department of Electronics and Information Convergence Engineering, Kyung Hee University—Global Campus, Yongin, Korea (the Republic of)"
      ],
      "name": "Seung Ha Hwang"
    },
    {
      "affiliations": [
        "Department of Medicine, Kyung Hee University College of Medicine, Seoul, Korea (the Republic of)"
      ],
      "name": "Sooji Lee"
    },
    {
      "affiliations": [
        "Department of Medicine, Kyung Hee University College of Medicine, Seoul, Korea (the Republic of)"
      ],
      "name": "Jinyoung Jeong"
    },
    {
      "affiliations": [
        "Department of Medicine, Kyung Hee University College of Medicine, Seoul, Korea (the Republic of)"
      ],
      "name": "Jaehyun Kong"
    },
    {
      "affiliations": [
        "Department of Electronics and Information Convergence Engineering, Kyung Hee University—Global Campus, Yongin, Korea (the Republic of)"
      ],
      "name": "Hayeon Lee"
    },
    {
      "affiliations": [
        "Centre for Health Performance and Wellbeing, Anglia Ruskin University, Cambridge, UK"
      ],
      "name": "Lee Smith"
    },
    {
      "affiliations": [
        "Department of Medicine, CHA University School of Medicine, Seongnam, Korea (the Republic of)"
      ],
      "name": "Jaehyeong Cho"
    },
    {
      "affiliations": [
        "Department of Precision Medicine, Kyung Hee University, Seoul, Korea (the Republic of)"
      ],
      "name": "Yesol Yim"
    },
    {
      "affiliations": [
        "Department of Electronics and Information Convergence Engineering, Kyung Hee University—Global Campus, Yongin, Korea (the Republic of)"
      ],
      "name": "Jinseok Lee"
    },
    {
      "affiliations": [
        "School of Health and Environmental Science, Korea University, Seoul, Korea (the Republic of)"
      ],
      "name": "Jiseung Kang"
    },
    {
      "affiliations": [
        "Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea (the Republic of)"
      ],
      "name": "Jee Myung Yang"
    },
    {
      "affiliations": [
        "Department of Pediatrics, Kyung Hee University College of Medicine, Dongdaemun-gu, Seoul, Korea (the Republic of)"
      ],
      "name": "Dong Keon Yon"
    }
  ],
  "title": "Global, regional and national burden of major blindness-associated ophthalmologic conditions, 1990–2021, with forecasts to 2050: a systematic analysis for the Global Burden of Disease Study 2021",
  "uid": "981c90cb-4a15-5197-ba95-ec528d2af7ec"
}