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Product of the month January:
The new FFP2 mask with CE made in Germany - order your 20 pack now at the discounted price! :-)
- Order number: 81083
Dieser Test mit Lea-Symbolen simuliert die zeilenartige Anordnung von Testzeichen und kann... more
Product information "LEA distance chart book with crowding (3m)"
Dieser Test mit Lea-Symbolen simuliert die zeilenartige Anordnung von Testzeichen und kann deshalb als Vorstufe zu einem Zeilentest eingesetzt werden, wenn die Prüfperson Schwierigkeiten hat sich auf Zeilen zu konzentrieren. Jede Seite enthält ein Symbol, umgeben von anderen Symbolen gleicher Größe. Es muß das mittlere Symbol erkannt werden. Die peripher angeordneten Symbole simulieren die bei einem Zeilentest entstehenden Interaktionen. Die Symbolgrößen sind logarithmisch abgestuft und liegen zwischen Visus 0,25 und 1,25 bei 3m Testentfernung. Spiralgebundenes Buch (15x15cm) mit 16 Seiten.
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