Published in 2018
- The aim of the study was a systematic review of refractive errors across the world according to the WHO regions.
- Refractive errors are the most common ocular problem affecting all age groups. They are considered a public health challenge.
- Recent studies and WHO reports indicate that refractive errors are the first cause of visual impairment and the second cause of visual loss worldwide as 43% of visual impairments are attributed to refractive errors.
- This report showed that astigmatism was the most common refractive errors in children and adults followed by hyperopia and myopia.
- The highest prevalence of myopia and astigmatism was seen in South-East Asian adults.
- The highest prevalence of hyperopia in children and adults was seen in the Americas.
- A direct correlation was found between the prevalence of myopia and astigmatism in most WHO regions. The trend of myopia has increased linearly in the past three decades, maybe as a result of increased indoor activity due to computerization in recent years.
To access the study, click here: ps://doi.org/10.1016/j.joco.2017.08.009
To download the full study, click here: Global and regional estimates of prevalence of refractive errors: Systematic review and meta-analysis