What is "focally"

Usage examples of "focally".

He is a forty-two-year-old white male who had suffered a heart attack and who had shown focally compromised coronary circulation, suggesting he was a good candidate for a triple bypass procedure.

Because, he sees, holding it at just this certain angle to the light, radiation from the original radium numerals has darkened the crystal focally, each number having in effect radiographed itself in the accidental plate of the crystal.