# Global cataract prevalence and diagnosis

> Live situation record from CLSTR: https://clstr.news/situations/global-cataract-prevalence-and-diagnosis
> Updated: 2026-08-25T05:34:05.000Z. Sources: 4. Developments: 2.

Global health data indicates that cataracts affect more than 94 million people, serving as a leading cause of blindness and moderate to severe visual impairment. A significant obstacle to treatment is the tendency for individuals to mistake gradual vision loss for natural aging. In Brazil, the Unified Health System performed over 1.18 million cataract surgeries in 2024, a 20% increase from the prior year.

Medical experts emphasize the necessity of distinguishing cataracts from presbyopia. While presbyopia involves a decreased ability to adjust focus between distances, cataracts involve the clouding of the eye’s lens, resulting in symptoms such as glare and blurred vision. To manage these conditions, specialists recommend regular eye examinations and consulting doctors regarding intraocular lens options, such as monofocal or multifocal lenses, to suit individual lifestyle needs.

## Timeline

### 2026-08-25: Eye health: Distinguishing between presbyopia and cataracts

Medical professionals advise distinguishing between presbyopia and cataracts, noting that surgery timing for cataracts should be based on lifestyle impact rather than age alone.

4 sources. https://clstr.news/cluster/eye-health-distinguishing-between-presbyopia-and-cataracts

### 2026-08-13: Cataracts affect 94 million people globally, prompting calls for early diagnosis

Cataracts affect over 94 million people worldwide. Experts urge early diagnosis to avoid complications, noting that many delay treatment by mistaking vision loss for normal aging.

2 sources. https://clstr.news/cluster/cataracts-affect-94-million-people-globally-prompting-calls-for-early-diagnosis

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Cite as: Global cataract prevalence and diagnosis. CLSTR, https://clstr.news/situations/global-cataract-prevalence-and-diagnosis