I'm not so certain that the issue is the definition of the term normal, so much as it is the value (positive or negative) or association (healthy vs. unhealthy) the term implies in a medical or social context.
One of the most common reasons for blurry vision while wearing contacts is that your eyes are dry. Some people have a medical condition that causes dry eyes, called dry eye syndrome, but others' eyes are irritated by the contacts themselves.
Some common reasons for your vision to be blurry, cloudy, or hazy in your contacts are: 1. Deposits on the contact lens. 2. Dryness of the contact or the eyes. 3. Movement or rotation of the contact lens. 4.