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) ...

Corneal topography is an indispensable tool ... Placido-disk systems have excellent accuracy and reproducibility in curvature measurement. The Orbscan ® (Bausch & Lomb, Rochester, NY) device ...