Astigmatism occurs when the eye is shaped more like an oval than a sphere, causing blurry vision. Astigmatism affects about one in three Americans and it occurs more frequently as you age.

Lower-order aberrations — defocus and astigmatism — are responsible ... Figure 3 shows an eye model with a real crystalline lens shape and two other models with other hypothetical shapes.

Both refractive and corneal astigmatism saw an increase in prevalence in children after the COVID-19 pandemic, with corneal ...

The COVID-19 pandemic has led to increased astigmatism in children, with prolonged screen time and less outdoor activity ...

In a cohort of 21,655 children ages 6 to 8 years, the prevalence rate of refractive astigmatism of at least 1.0 diopter (D) ...

In general, patients will find 1 D or more of astigmatism to be significant, although some may find lesser amounts to be bothersome. One study suggests that as many as 20% of eyes with cataract ...

The prevalence and severity of refractive astigmatism and corneal astigmatism increased among schoolchildren after the ...

The content creator, whose real name is Jimmy Donaldson ... I get this comment a lot and it's why I got my eyes examined and I found out I have a severe astigmatism and my vision is horrible.