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Modified Thorington Test Card

Product Number: 15111

Purchase Gulden’s Modified Thorington Test Card.  This card is used in conjuction with a Maddox rod and illumination source to measure the extent of horizontal and vertical phorias.


Card includes one horizontal row and one vertical row of letters.  When the hole in the card is illuminated, the patient holds a Maddox rod over their eye and reports the location of the line on the card.  In this way, the extent of the phoria can be measured.  Dimensions: 4.75 by 5.5 inches.