In a sentence, would it be correct to say 'Astigmatism' or 'An Astigmatism'?

Not medical advice: It will depend on your sentence which is like this: Astigmatism is a vision condition that causes blurred vision.

  • Answer provided by kgb agent Jojemari L on Sunday, January 16 2011 at 11:22PM EST
  • Source: www.aoa.org/...