An optical state where the refractive power of a lens system is too strong for the eye, causing light rays to converge before they reach the retina. In clinical refraction or optical testing, this condition artificially induces nearsightedness. It blurs distant objects while keeping near vision relatively clear.
Heard on the job
The subject is overfogged by about half a diopter, so back off the positive sphere until they can read the bottom line.