The Vision In Preschoolers (VIP) Study, sponsored by the National Eye Institute, initially evaluated 11 vision screening tests and found that LEA Symbols were among the 4 most effective tests for young children. VIP's Crowded Single LEA Symbols Visual Acuity Test for 5 feet (1.5 meter), designed exclusively for the study, is now available.

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Listen to NASN Radio Broadcast Vision Screening: Avoiding the Big Mistakes>>