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.
Q. Why canât I use artificial tears with my contacts?A. Some solutions contain certain preservatives the lenses might absorb, resulting in a toxic reaction. Others may be too thick and cause blurriness if they build up on the lens. If you have dry eye, there are similar products for lens wearers that are safe to use.. Why canât I use artificial tears with my contacts?A. Some solutions contain certain preservatives the lenses might absorb, resulting in a toxic reaction. Others may be too thick and cause blurriness if they build up on the lens. If you have dry eye, there are similar products for lens wearers that are safe to use.