Opera glasses <joke> Wear what you would wear to the opera in Seattle / New York / London / Paris / etc.
You should wear something presentable to a matinee opera, but less formal than for an evening performance.
For attending an opera in the afternoon, you should wear dress slacks and a dress shirt if you are a male. A female should wear a casual dress.
business wear
Black Tie. This means as close to formal as possible. Your best evening gown, if its a female, suit for the man.
No, he is not blind. When he conducts, he does wear readers, apparently, from photos. The blind opera tenor you may be thinking of is Andrea Bocelli.
You should wear something presentable to a matinee opera, but less formal than for an evening performance.
For attending an opera in the afternoon, you should wear dress slacks and a dress shirt if you are a male. A female should wear a casual dress.
business wear
The same thing you'd wear anywhere else warm and sunny!
black
Yes, you can wear green to an opera, unless you're a man and it's the premier performance. Then it's black and white.
Evening Gowns and Tuxedo.
clothes
They will wear a "Uniform", the 2010 Vancouver games uniform was designed by Burton...
the same we wear
A black simple suit with a white shirt and neutral tie would fit well in the opera.
Black Tie. This means as close to formal as possible. Your best evening gown, if its a female, suit for the man.