The LEA™ Symbols single symbol book is usedto determine the visual acuity threshold in children and adults. The book with thedifferent symbols- circle, square, house and apple - is held out to the patientin different sizesand at different distances.
Details
With symbols in various sizes
Response key and cover included
Visual acuity: 0.10 - 2.50
Test distance: 3 m
Dimensions: 12.7 x 12.7 cm
Overview
LEA™ Symbols Single Symbol Book
Determines the visual acuity threshold of children and adults
