Understanding How Young Adults Perceive Blurred Image Quality and Creating a Model Predicting Their Quality Ratings

Inclusion Criteria: * Distance refractive error (equivalent sphere) between -7 D and +5 D * Astigmatism below 4D * Minimum corrected visual acuity: 10/10 Exclusion Criteria: * Aphakic or pseudophakic eye surgery * Reported systemic pathology that affects vision * Medical treatment or taking medications that affect vision * Severe ocular pathology declared, involving a loss of visual field as in glaucoma, a loss of acuity * Reported neurological deficit, including a history of seizure or sensorimotor coordination disorders, vestibular or cerebellar pathology * Binocular vision problems such as amblyopia, strabismus, or double vision