Actress Catherine Zeta-Jones (R) and her husband Michael Douglas arrive for the American Theatre Wing's 64th annual Tony Awards ceremony in New York, June 13, 2010. REUTERS/Lucas Jackson

Michael Douglas has taken his throat cancer in his stride. He told People magazine that he was optimistic and treating this as a curable disease. But he admitted that he was uncertain about the future.

His actress wife Catherine Zeta-Jones however admitted that she had a tough time watching her husband battle the disease. She also said that she was furious with doctors for failing to diagnose the disease early.

The couple has admitted that the news of cancer didn't really come as a surprise, the dry throat and coarse voice for months was quite indicative.

The 65-year-old Hollywood veteran announced on August 16 that doctors had found a tumor in his throat and he would undergo aggressive radiation and chemotherapy sessions. The couple have been married for 10 years and have two children Dylan (10) and Carys (7) together.

Zeta-Jones said the thought of watching an agile person undergoing chemotherapy and radiation and losing strength is the hardest part. Douglas on Tuesday told audience in David Letterman's The Late Show that although his cancer was late stage four, doctors say he has an 80 percent chance of recovery.