The TSA web site states the following about eye drops and saline solutions (and a host of other items as well):
However, if the liquid medications are in volumes larger than 3 ozs each, they may not be placed in the quart-size bag and must be declared to a Transportation Security Officer. A declaration can be made verbally, in writing, or by a person’s companion, caregiver, interpreter, or family member.
You should declare your contact lens solution to the TSO at the beginning of the screening process (unless it is 3 ounces or less and is in your Freedom Baggie).
The above is no guarantee that the particular screener you encounter will be familiar with what is and is not permitted.
- Alan