Maddox Rod and Red Lens
Perfect for measuring lateral and vertical phoria, in both near and distant vision.
Red translucent plastic occluder on one end & a red maddox occluder on the other
Handheld Red Maddox with 45º angled lines from center.
Maddox rods are used in conjunction with prisms measuring lateral and vertical phoria in both near and distant vision.
The Maddox rod test can be performed in free space without use of the phoropter.
Similar to the Maddox rod test, the red lens test is also used to test for double vision.