Web-based versus paper administration of common ophthalmic questionnaires: comparison of subscale scores.

Objective: To compare participants' responses to Web-based and paper-and-pencil versions of an ophthalmic, patient-reported outcome (PRO) questionnaire.

Design: Questionnaire development.

Participants: Matched subjects with ocular surface disease (OSD) (n = 68) and without OSD (controls, n = 50).