A Study of the Response to AG-86893 in Patients With Pterygium Hyperemia

Inclusion Criteria: * Good health with no clinically significant findings based on the medical history, electrocardiogram, vital signs, blood chemistry, hematology, and urinalysis findings, as determined by the investigator * Females of childbearing potential must have a negative pregnancy test at baseline and must be on established, adequate contraception and males must use condoms if their partner is of childbearing potential and their female partner should also use an additional effective means of contraception, or they must agree to abstain from sexual intercourse with a female partner for the duration of the study; contraception should be continued for 3 months after the last dose. * Presence of pterygium with associated conjunctival hyperemia (redness) of grade ≥2 as assessed by a central reading center. Exclusion Criteria: * History or presence of any ocular diseases other than pterygium or its sequelae (after-effects), including neoplasia (uncontrolled overgrowth) * Diagnosis of ocular hypertension or glaucoma requiring use of intraocular pressure-lowering medication * Use of contact lenses during the study in the study eye * History or evidence of ocular surgeries in the study eye at any time * History of liver dysfunction or current abnormal liver enzymes * Pregnancy, plans for pregnancy, or breastfeeding during the study