# Global preventable vision loss and eye care

> Live situation record from CLSTR: https://clstr.news/situations/global-preventable-vision-loss-and-eye-care
> Updated: 2026-10-05T06:30:00.000Z. Sources: 5. Developments: 2.

Global health organizations and experts emphasize that a vast majority of vision loss is preventable through timely medical intervention. The World Health Organization suggests that 75% of visual impairments could be avoided via prevention, diagnosis, and treatment.

In Brazil, ophthalmologist Marcos Ávila of the Brazilian Council of Ophthalmology notes that conditions like glaucoma and cataracts often progress without early symptoms. He highlights that approximately 70% of the estimated 1 million Brazilians with glaucoma remain undiagnosed.

On a broader scale, the humanitarian organization ‘Licht für die Welt’ reports that 90% of vision loss cases worldwide are preventable. The organization focuses on addressing uncorrected refractive errors, cataracts, and neglected tropical diseases such as trachoma and river blindness, particularly through medical training and equipment provision in African nations including Ethiopia, Burkina Faso, Mozambique, and Uganda.

## Timeline

### 2026-10-05: Licht für die Welt: 90% of vision loss is preventable

The NGO ‘Licht für die Welt’ reports that 90% of global vision loss is preventable through medical intervention and improved eye care in regions like Africa.

3 sources. https://clstr.news/cluster/licht-fr-die-welt-90-of-vision-loss-is-preventable

### 2026-09-29: Preventive eye exams could avoid 75% of visual impairments

Experts warn that 75% of visual impairments are preventable through early diagnosis, noting that many serious conditions like glaucoma often progress without symptoms in Brazil.

2 sources. https://clstr.news/cluster/preventive-eye-exams-could-avoid-75-of-visual-impairments

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Cite as: Global preventable vision loss and eye care. CLSTR, https://clstr.news/situations/global-preventable-vision-loss-and-eye-care