11.   Philippine President Joseph Estrada will undergo an operation Tuesday night to remove excess skin from his eyelids that impairs his vision.

12.   His vision was considerably impaired by the strokes and he has had an increased heart rate and high blood pressure in recent years.

13.   His vision was considerably impaired by the strokes and he has suffered from increased heart rate and high blood pressure in recent years.

14.   She suffers from a eye disease that has seriously impaired her vision, and she has depended on Beau for the past two years to help her get around.