PV Numbers Low Vision Chart

Precision Vision Verified independent store

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Can be used for testing in multiple languages. Features smaller group for repetitive testing. PV Numbers are calibrated to Sloan optotype standards. Each PV Number is chosen becaus e of specific size, design, difficulty, and its blur at threshold. Also, number charts give the option of testing multiple types of patients. Even patients not familiar with the Roman alphabet can identify numerals, making this a universal test. Show more