A Clinical Study to Evaluate the Effect and Side Effect of a New Artificial Tear Formulation (ABBV-444) Compared to Refresh Optive Unit Dose in Adult Participants With Dry Eye Disease

Dry Eye Disease (DED) refers to a long-term condition that happens when there is not enough lubrication in your eyes. This can happen when your eye cannot make enough tears or if you make poor-quality tears. The purpose of this study is to compare the efficacy and safety of a new artificial tear formulation (ABBV-444) with Refresh Optive UD for 90 days in participants with Dry Eye Disease (DED. ABBV-444 is being developed for the treatment of Dry Eye Disease (DED). Participants will be placed into 1 of 2 treatment arms. Each group receives different treatment. Adult participants diagnosed with dry eye disease will be enrolled. Around 250 participants will be enrolled in the study at approximately 20 sites across the US In this study, participants first complete a 7-day run-in period using REFRESH PLUS® eye drops. Those eligible are then randomized to receive ABBV-444 eye drops or REFRESH OPTIVE® Unit Dose eye drops. Participants in both arms will receive treatment for a 90-day treatment period. There may be higher treatment burden for participants in this trial compared to their standard of care. Participants will attend multiple required study visits during the study at the study site. The effect of the treatment will be checked by medical assessments and questionnaires.