41.   The big forward had vision problems and had to leave the game.

42.   The effects of laser surgery are permanent, and if things go wrong, you could end up with uncorrectable vision problems far worse than those you started with.

43.   The disease is unlikely to cause the vision problems and headaches.

44.   The Hawks also decided that Alan Henderson will make the trip, but it was questionable whether his vision problems would ease.

45.   The horror began two years ago with a television show about vision problems.

46.   The five-time batting champion said he believes he has a vision problem and will visit an eye doctor in New York on Thursday.

47.   The lasers, used in eye surgery, reshape the cornea to correct nearsightedness and other vision problems.

48.   The issue hits home with Sweeney more than others because one of his prematurely born twins is having vision problems.

49.   The price includes all needed follow-up care, including additional surgeries, to correct any vision problems.

50.   The test could also be used to diagnose vision problems among brain tumor patients and others.

n. + problem >>共 955
health 11.61%
heart 4.65%
drug 2.79%
security 2.11%
computer 1.60%
safety 1.51%
knee 1.51%
image 1.25%
injury 1.12%
kidney 0.97%
vision 0.46%
vision + n. >>共 108
problem 18.16%
goggle 8.52%
system 8.30%
loss 7.40%
equipment 5.83%
thing 4.93%
test 4.04%
impairment 3.36%
device 3.14%
statement 1.79%
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