Assessment of the Efficacy of Ocular Dipyridamole in the Treatment of Dry Eye Symptomology in Subjects With Pterygium

Inclusion Criteria: * Able to provide informed consent. * Ineligible or refused surgical excision, or had recurrence of pterygium following surgical excision * Able to follow the study instructions, including application of the study product * Agreement not to change the type of lubricating eye drops used (if any) during their participation in the study. * Assessed as having at least pterygium stage 0-1 (pinguecula) based on Johnston, Williams \& Sheppard's classification for pterygium * Concomitant dry eye symptoms, as determined by one or more of the following Subject interview (modified Ocular Surface Disease Index test), Tearing, Itch / foreign body sensation, Positive Fluorescein test, Positive TBUT test, Positive Tear meniscus test Exclusion Criteria: * Inability to provide informed consent * Dry eye due to other factors * Known lacrimal obstruction * Contact lens wearers * Non-corrected refraction * Allergy or sensitivity to dipyridamole or excipients * Use of dipyridamole in the last 6 months * Other eye conditions (i.e. active ocular infection, herpes keratitis in last 6 months, corneal disorder abnormality excluding pterygium, history of ocular acne rosacea, blepharitis) which would impact results * Diagnosis of ALS (Amyotrophic lateral sclerosis) * Existing conditions which are contraindicated or precaution in use of dipyridamole or excipients * Use of eye drops (other than ocular lubricants) * Pregnant or breastfeeding * Inability to apply the medical product or follow the study procedures * Anything that the PI thinks would impact the trial