An Investigation of Topical Ophthalmic Low-Dose Atropine on Pupil Size and Accommodation

Inclusion Criteria: 1. Subjects may be male or female, of any race, and between 18-40 years old at the time of screening. 2. Patients must have best spectacle corrected visual acuity of at least 0.10 logMAR (20/25) in each eye. 3. Subjects must be willing and able to apply eye drops to their non-dominant eye and to return for all scheduled follow-up visits. Exclusion Criteria: 1. Subjects with any contraindication to atropine use (as listed on package insert). At the time of this submission, the only contraindication listed is: "Hypersensitivity or allergic reaction to any ingredient in formulation" 2. Subjects using monamine oxidase inhibitors (MAOIs). These are: Isocarboxazid (Marplan), Phenelzine (Nardil), Selegiline (Emsam), and Tranylcypromine (Parnate). 3. Subjects with a history of any of the following medical conditions: collagen vascular disease, autoimmune disease, immunodeficiency diseases, ocular herpes zoster or simplex, endocrine disorders (including, but not limited to active thyroid disorders and diabetes), lupus, and rheumatoid arthritis. 4. Subjects with a history of intraocular or corneal surgery (including cataract extraction), active ophthalmic disease or abnormality (including but not limited to, blepharitis, recurrent corneal erosion, dry eye syndrome, neovascularization \>1mm from limbus), clinically significant lens opacity, clinical evidence of trauma (including scarring). This includes any patient with open-angle glaucoma, regardless of medication regimen or control. Additionally, any patient with an intra-ocular pressure (IOP) greater than 21 mm Hg at baseline is specifically excluded from eligibility. Subjects with narrow angles (less than Van Herick angle of 3) will also be excluded. 5. Subjects who are pregnant, planning to become pregnant or breastfeeding during the course of the study.