YouTuber MrBeast was diagnosed with a severe astigmatism after relentless criticism online led to him to seek out an eye examination. MrBeast, aka James Stephen "Jimmy" Donaldson, was met with a ...

Astigmatism occurs when the cornea—the transparent front surface of the eye—has an irregular shape, resembling a football rather than a perfectly round basketball. This uneven curvature causes light ...

These considerations may be especially relevant to patients with certain pre-existing ocular conditions (prior corneal refractive surgery, irregular corneal astigmatism, severe corneal dystrophy ...