The Pinhole And Its Use In Vision Screening.

The purpose of this study was to determine if the use of a pinhole used in a large screening project of adults could identify the presence of an uncorrected refractive error. Visual acuity
screening on a monocular basis was performed at a 20/40 level with the most recent distance correction. Qualitative improvement with a pinhole was solicited and recorded. A follow-up on referrals was made to assess false-positive and false-negatives. Results indicate that this is a viable procedure in this setting for determining if there is a refractive component to a visual impairment. With the proliferation of glaucoma and cataract screenings this simple technique could help in directing persons to the proper professional
source for vision care.