Good-Lite Vision In Preschoolers (VIP) Screener
Vision In Preschoolers (VIP) Screener
The Vision in Preschoolers (VIP) Study sponsored by the National Eye Institute initially evaluated 11 vision screening tests in Phase I including 2 distance visual acuity eye charts – LEA SYMBOLS and HOTV. LEA SYMBOLS was the only distance visual acuity test to move on to Phase 2. Three other tests in Phase 2 measured refractive error and assessed stereoacuity. The Crowded Single LEA SYMBOLS Visual Acuity test for 5 Feet (1.5 meters) was designed exclusively for Phase 2 of VIP.