Schirmer Test
CONJUNCTIVA
A type I Schirmer Test was performed after instillation of one eyedrop of 0.5% proparacaine ophthalmic solution in all subjects. Filter paper Schirmer strips were standardized among all sites. After slight eversion of the lower eyelid the filter paper strip was placed gently on the distal portion of the tarsal conjunctiva of the lower lid. The lid was returned to the anatomical position with the remaining portion of the Schirmer strip extending over the lid margin outward. This procedure was repeated on the contralateral eye and the Schirmer Strip was positioned at the junction of the middle and temporal third of both eyes. Eyes were then gently closed. After five minutes, eyes were opened, the Schirmer's strip was removed, and measurement of the portion of the strip wetted by the tears was recorded in millimeters according to the manufacturer's instructions.