The Maddox wing is an instrument used to measure the amount of near phoria at 33cm through dissociating two dissimilar images seen by each eye. To administer the test, the right eye views a red and white arrow on a scale while the left eye views only the numbers on the scale, with the patient identifying the number indicated by the arrows' positions. The test requires a brightly lit room and the patient wearing any needed optical correction.

2. MADDOX WING
Instrument by which
amount of phoria for near
at 33cm can be measured.

3. PRINCIPLE
To dissociate two dissimilar images of near phoria.

4. PROCEDURE
1. IT IS QUANTITATIVE & SUBJECTIVE METHOD.
2. The right eye sees red & white arrow each of which point to scale
with number seen by the left eye.
3. The room should be brightly illuminated & patient should be
optically corrected.
4. The examiner instructs the patient to hold the Maddox wing &
identify the number that the white vertical arrow & red horizontal
arrow.

6. THANK YOU