Evaluation of ocular health and comfort in non spectacle wearer and non contact lens wearers (emmetropes) for three months

This study is looking at how the eye health and comfort of people who do not need any vision correction (called emmetropes) changes over three months. These participants do not wear glasses or contact lenses. By studying this group, researchers hope to better understand eye comfort across different populations. Participants will attend a few check-up visits where their eyes will be examined. You may be eligible if: - You are 18 years of age or older - You do not need glasses or contact lenses (your eye prescription is between +0.50 and -0.50 diopters) - Your eyes are in generally good health - You can read and understand English - You are willing to attend all study visits You may NOT be eligible if: - You have any current eye infection, injury, or condition of the cornea, eyelids, or conjunctiva - You have a systemic disease that affects eye health (e.g., diabetes, Graves disease, lupus) - You use prescription eye drops or medications that affect the eyes - You have had eye surgery in the last 12 weeks or previous corneal refractive surgery - You are currently pregnant - You are enrolled in another clinical trial Talk to your doctor about whether this trial might be right for you.