It's always a good idea to get your doctors talking to each other and writing to each other. Life's too short to avoid all that. Once treated, people with angle-closure glaucoma can safely do all those activities. Early in an attack, the cornea may be clear. It depends on how high the pressure is, and how healthy the cornea is.
Cornea clouding from pressure is one source of visual blurring.
This pressure may build into a severe headache, accompanied by blurry vision and a red eye. People may notice halos around street lights during an attack. As the attack worsens, they may become nauseated and even vomit. Keep in mind, though, that other things, like cataracts, may also cause halos. I thought those were my migraine symptoms.