The purpose of this protocol is to compare the health-related quality of life (visual function) reported by participants when using web-based questionnaires versus their responses obtained when using standard paper versions of the questionnaires. This comparison will be performed in a population of patients diagnosed with ocular surface disease (OSD) and in age- and gender-matched controls by using a randomized, cross-over study design. This type of comparative study of patient-reported outcomes has been reported for rheumatology, cardiology, psychiatry, asthma, alcoholism, pain assessment, gastrointestinal disease, diabetes, and allergy populations; however, to our knowledge there have been no reports of such a study from patients with ocular disease. The study will evaluate the agreement between scores reported via two modes of administration: a web-based version and a paper-and-pencil version. Components of three questionnaires commonly used to evaluate visual function, symptoms, and vision-related quality of life in OSD will be included: the initial 5 questions of the Ocular Surface Index (OSDI), question #15 of the National Eye Institute Visual Functioning Questionnaire - 25 (VFQ-25), and specified domains of the National Eye Institute Refractive Error Quality Of Life Instrument-42 (RQL-42) (clarity of vision, near vision, far vision, glare, symptoms, worry, and satisfaction with correction).