Carry-on vs checked baggage considerations
Carry-on*:
Every item you may need in flight
Enough supplies to cover your needs if your checked baggage goes astray
Anything you may not be able to replace at your destination
Checked baggage:
Anything that does not comply with the 3-1-1 rule. (Should I rely on a medical exemption? Learn more here.)
Hydrogen peroxide disinfection solutions (ClearCare). This is sometimes confiscated.
Gate-checking hazards
If all of your essentials are in your carry-on, there is still risk that you could be required to check your carry-on at the gate. You can tell the gate agent that your medical supplies are in your carry-on, or (to be on the safe side) just pack then in a personal item instead.
Carry-on checklist suggestions
Several vials of PFsaline
Travel size of Unique pH or Tangible Clean
Non-moisturizing hand soap, 1oz
Insertion and removal plungers
Alcohol preps
Towel or dental bigs to cover workspace
Small mirror
Backup lenses (depending on your needs and how long your trip is)