Here is a sample:
The concept of "Duty to Warn" has become so much a standard optical practice that some eye care doctors and providers my just be droning it rather than practicing it. If they don't practice this, doctors offices or eye care providers might be liable for the results. While a great number of eye care providers know and practice the term, telling patients about impact resistant lenses, there are likely some, particularly those new to practice, who don't understand the term as it applies to working with patients and customers.