Ophthalmic emulsion

An ophthalmic emulsion, the emulsion comprising:

• water forming an aqueous phase;
• oil forming an oil phase;
• a hydrophilic surfactant having an HLB value of at least 8;
• a hydrophobic surfactant having an HLB value of below 8;
• a charged phospholipid;
• borate;
• a mucoadhesive galactomannan polymer;
• and
• wherein the emulsion is free of a benzalkonium chloride,
• wherein:
• i. the oil phase is in droplets within the aqueous phase and the droplets have an average diameter that is no greater than about 1000 nm, but is at least 10 nm, wherein the average diameter is corresponding to 90% of the cumulative undersize distribution by volume measured using a Microtrac S3500 Particle Size Analyzer (Software Version 10.3.1);
• and
• ii. the borate and galactomannan polymer cooperatively act to form a gel upon instillation of the emulsion in an eye of an individual.