21.   His work has won him awards for advances in treating vision problems in infants and young children.

22.   I know she has certain vision problems and temporary medical issues that are probably responsible for this.

23.   In the United States alone, more than three million people are affected, but half of them do not yet know that they have a vision problem.

24.   In two of the cases, the disability claims the court rejected were based on vision problems.

25.   It blocks light from passing through the lens, causing vision problems like blurring, double vision and halos.

26.   Its vision problems repaired, the Hubble Space Telescope is now peering into the deep reaches of the universe with a clarity that astronomers say is revolutionizing their science.

27.   Its vision problems repaired, the Hubble Telescope is now peering into the deep reaches of the universe with a clarity that astronomers say is revolutionizing their science.

28.   Kids who do complain of vision problems or headaches after using the computer should have their eyes checked, she said.

29.   Many have vision problems.

30.   Many optometrists view computer-related vision problems as a form of repetitive stress injury.