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LASIK is a popular vision correction procedure that can correct nearsightedness, farsightedness, and astigmatism and give patients freedom from glasses and contacts. The entire process typically takes ...

LASIK is typically used to correct vision problems like farsightedness, nearsightedness, and astigmatism, so while it's not known what vision problem Phillips had, it's likely one of those three.

Participants were presented with 17 numeric ratings, from 1 to 5, in increments of 0.25, one at a time and in random order, and were asked to estimate the position of each rating on an unmarked ...