Lancet: One in Two Cataract Blind Lack Surgical Access
The Lancet reports half of those blind from cataracts can't get simple surgery.
Nearly one in two people affected by cataract-related blindness worldwide are unable to access a simple surgery that can restore their sight, according to a study published in The Lancet Global Health journal. The findings highlight persistent global inequalities in access to one of the most cost-effective and widely performed medical procedures.
Cataract surgery, typically a 15-minute procedure, is known to provide immediate and long-lasting restoration of vision. Despite its proven effectiveness and relatively low cost, the study found that access remains uneven, particularly in low- and middle-income countries. Researchers said that millions continue to live with avoidable blindness due to barriers such as affordability, lack of surgical services, and limited awareness.
The study was conducted by researchers from institutions including the London School of Hygiene and Tropical Medicine and members of the Effective Cataract Surgical Coverage (eCSC) study group. The team analysed 130 population-based surveys known as the Rapid Assessment of Avoidable Blindness (RAAB), covering 68 countries. The data included a nationally representative survey from India.
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Researchers reported 68 country-level estimates using a metric called eCSC6/18, which measures effective cataract surgical coverage among individuals with visual acuity worse than 6/18 — a threshold indicating moderate to severe vision impairment. The metric not only assesses whether surgery was performed but also evaluates the quality and visual outcomes of the procedure.
The findings underscore the need for stronger public health strategies to expand access to eye care services, particularly in underserved regions. Experts say improving surgical infrastructure, training more eye health professionals, and reducing financial barriers could significantly reduce preventable blindness and improve quality of life for millions worldwide.
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