Flip Book: LEA SYMBOLS® Single Symbol Book Set (10ft/3m)

Good-Lite Co Verified independent store

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The Single Symbol Book is designed for testing children and adults who have difficulties perceiving symbols in lines. The visual acuity values measured with single symbols are ofte n several lines better than the line acuity values in persons with impaired vision and thus overestimate the quality of visual functioning. This book features single optotype line sizes from 20/200 to 20/10 (6/60 to 6/3) equivalent, 0.10 to 2.00. Includes isolating mask, response key, instructions, and 13 offset pages for easy flipping. Show more