WHO Urges Action to Close Cataract Surgery Gap & Prevent Avoidable Blindness

Millions worldwide are needlessly living with blindness from cataracts, a condition readily treatable with a relatively simple and affordable surgery. The World Health Organization (WHO) is urgently calling on countries to accelerate access to this life-changing intervention, highlighting that nearly half of those affected globally still lack the care they need.

A new study published in The Lancet Global Health reveals the significant scale of the problem. Cataracts, characterized by the clouding of the eye’s lens leading to blurred vision and potential blindness, affect more than 94 million people globally. Yet, cataract surgery – a procedure often completed in under 15 minutes – remains inaccessible to a substantial portion of those who would benefit.

While global coverage of cataract surgery has improved by approximately 15% over the last two decades, this progress hasn’t kept pace with the increasing demand driven by aging populations and a rising incidence of cataracts. Current projections estimate an 8.4% increase in coverage this decade, but this falls short of the World Health Assembly’s target of a 30% increase by 2030. Addressing this gap is critical to preventing avoidable vision loss.

“Cataract surgery is one of the most powerful tools we have to restore vision and transform lives,” stated Devora Kestel, Director a.i., WHO Department of Noncommunicable Diseases and Mental Health. “When people regain their sight, they regain independence, dignity, and opportunity.” The impact of restoring vision extends far beyond improved eyesight, influencing quality of life, economic productivity, and overall well-being.

The study’s analysis of data from 68 countries in 2023 and 2024 reveals stark regional disparities. The African Region faces the most significant challenge, with three out of four individuals needing cataract surgery currently unable to access it. Women consistently experience lower access to care than men across all regions, highlighting a persistent inequity in healthcare access.

These disparities are rooted in a complex interplay of structural barriers. These include shortages and uneven distribution of trained eye-care professionals, the financial burden of out-of-pocket costs, lengthy waiting times for surgery, and a lack of awareness about available services. Even when services are available, cultural or logistical challenges can prevent individuals from seeking care.

Age remains the primary risk factor for developing cataracts. However, other factors can accelerate their development, including prolonged exposure to ultraviolet (UV-B) radiation, tobacco use, corticosteroid use, and conditions like diabetes. Understanding these contributing factors is important for both prevention and early detection.

Closing the Gap: Strategies for Improved Access

The WHO emphasizes that ending preventable blindness from cataracts is both essential and achievable. A multi-pronged approach is needed, starting with the integration of vision screening and eye examinations into primary healthcare settings. This would allow for earlier detection and referral for treatment.

Investing in essential surgical infrastructure, including equipment and facilities, is also crucial. Expanding and strategically distributing the eye-care workforce, particularly in rural and underserved areas, will ensure that skilled professionals are available where they are most needed. Telemedicine and mobile eye clinics can play a role in reaching remote populations.

Targeted efforts to address the specific barriers faced by women and marginalized communities are paramount. This includes addressing financial constraints, cultural norms, and logistical challenges that may prevent them from accessing care. Ensuring equitable access to cataract surgery is a matter of social justice and public health.

The WHO is urging governments, civil society organizations, and partners to build upon existing momentum, address gender and geographic inequities, and prioritize underserved populations. Sustained commitment and collaborative action are essential to transform cataract surgery from an unattainable option for millions to a universally accessible intervention. By prioritizing this simple yet powerful procedure, the world can make significant strides towards ending avoidable blindness and improving the lives of countless individuals.