Inclusion Criteria:  Adults age 18 and above able to provide informed consent to participate Subject with stable ocular health, defined as no ocular conditions requiring ongoing topical therapy or recent surgical intervention  Exclusion Criteria:  Adults unable to consent Individuals less than 18 years of age Prisoners Pregnant women. Known contradictions or sensitivities to study medication (oxymetazoline) Ocular surgery within the past 3 months or refractive surgery within the past six months Grossly abnormal lid margins, anatomical abnormalities, previous eyelid or orbital surgery Variable ptosis or eyelid position (e.g., myasthenia gravis, thyroid eye disease, or blepharospasm) Any ocular or systemic condition that, in the opinion of the investigator, would confound study data, interfere with the subject's study participation, or affected the subject's safety or trial parameters Presence of an active ocular infection Prior (within 5 days of beginning study treatment) use of eye whiteners (eg, vasoconstrictors), decongestants, antihistamines (including over the counter and herbal topical ophthalmic medications), phenylephrine dilating drops, any other topical ophthalmic agents Inability to sit comfortably for 15 - 30 minutes