A Double-Masked Comparison of FID 123320 Ophthalmic Solution to Vehicle for the Reduction of Ocular Redness

Key Inclusion Criteria: * Capable of giving signed informed consent; * Willing and able to follow all instructions and attend all study visits; * Able to self-administer eye drops- in the opinion of the investigator; * History of redness relief drop use within the last 6 months, or a desire to use over-the-counter (OTC) eye drops for redness relief; * Females capable of becoming pregnant: Agree to urine pregnancy tests and the use of medically acceptable forms of birth control throughout the study; * Ocular health within normal limits, including best-corrected visual acuity (BCVA) of 20/40 or better in each eye as measured using a Snellen chart; * Ocular redness at baseline as specified in the protocol; * Other protocol-specified inclusion criteria may apply. Key Exclusion Criteria: * Known contraindications or sensitivities to the use of any of the investigational drug(s) or their components, or any other medication required by the protocol; * Ocular surgical interventions within 6 months prior to Visit 1 or during the study; * Ocular conditions that, in the opinion of the investigator, could affect the subject's safety or study parameters (i.e., could affect ocular redness, intraocular pressure, or eyelid position); * Disallowed medications or devices as specified in the protocol; * Planned surgery (ocular or systemic) during the study period or within 30 days after the study period; * Other protocol-defined exclusion criteria may apply.