Eye drop showdown: which artificial tear works best for dry eyes?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Are at least 18 years of age and have full legal capacity to volunteer; 2. Have understood and signed an institutional review board (IRB)/ independent ethics committee (IEC) approved informed consent form; 3. Are willing and able to attend all study visits as required per protocol; 4. Are willing to discontinue use of all habitual artificial tear supplements and use only the study drops as directed for the entire study duration; 5. Have dry eye symptomatology as per Tear Film \& Ocular Surface Society Dry Eye WorkShop (TFOS DEWS) II definition: * Have an Ocular Surface Disease Index (OSDI) score ≥13; 6. Have an absence of active\* anterior segment disease; 7. Have not worn contact lenses for the previous 14 days before screening, and are willing to not wear contact lenses for the duration of the study; 8. Are correctable to a visual acuity of +0.20 LogMAR or better (in at least one eye) with refraction results. Exclusion Criteria: 1. Have taken part in an interventional clinical study within the previous 14 days before screening; 2. Are participating in any concurrent ocular or interventional clinical trial; 3. Have any active\* ocular inflammation, infection, or are using ocular topical treatment (other than dry eye drops); 4. Started any systemic medication known to cause dry eye (e.g., anti-histamine, antidepressants, benzodiazepines, etc.) within 30 days before screening. Stable dosing for \>30 days before screening is allowed, but changes (including commencing new) of dosing of such medication within the study period would lead to early exit from the study; 5. Had any ocular injury or surgery within the 1 year prior to screening, nor have ocular surgery planned/ anticipated; 6. Have biomicroscopy signs of grade 3 or more (Efron scale); 7. Have known sensitivity to the diagnostic pharmaceuticals or to any ingredients in the study products; 8. Are pregnant, lactating or planning a pregnancy at the time of enrolment; 9. Are a member of the Centre for Ocular Research \& Education directly involved in this study (on the delegation log); 10. Are an employee of Alcon.