1. Researchers found increased prevalence and severity of refractive astigmatism and corneal astigmatism among Hong Kong schoolchildren post-COVID-19.
2. Both refractive astigmatism and corneal astigmatism showed increased prevalence and mean cylindrical power.
3. Potential factors: prolonged digital device use, reduced outdoor exposure, and increased near work duration. 
4. Risk of refractive and corneal astigmatism increased after adjusting for various factors. 
5. The change in corneal curvatures induced by near work takes time to develop, which suggests a relationship between environmental and lifestyle factors, as well as the pathophysiology of astigmatism.
6. Generalizability to other populations could be limited, and smaller sample sizes in later years could impact precision. 

Source: JAMA Ophthalmology