Before that it was radial keratotomy which my Mom had. Maybe it is apocryphal but she told me they discovered it when a Russian someone got exploded glass in their eye and it improved their vision.

https://en.wikipedia.org/wiki/Radial_keratotomy

According to the wikipedia article, it was a Russian child that fell while riding a bike and his glasses broke and sent pieces of glass into both eyes. The doctor made radial cuts to remove the glass, and discovered that his vision improved afterward.