I have anisometropia. my right eye is -.5 and my left +1. do i need glasses or contacts?

Depends: If you see well enough without bothersome symptoms of blur, eyestrain, or nighttime vision problems, you may be able to go without glasses for a while longer. As you age, though, your more hyperopic (+1) eye will likely become more symptomatic with near visual tasks, & your myopic (-0.5) eye, if becomes more nearsighted, will become more symptomatic for distance. Then, glasses/CTL likely needed.