Maddox rod n wing

medox rod and medox wing by rizwan sajjad

1. PRESENTED BY PRIYANKA RIZWAN SAJJAD SANIA RAHEEM MADDOX ROD AND MADDOX WING

2. OUTLINE Maddox Rod Defination Principle Procedure Maddox wing Defination Principle Procedure Refrences

3. MADDOX ROD Consists of series of plano-convex cylindrical lenses. Available in Red and White Colour . Used in diagnosis of ExtraOcular Imbalance.

4. MADDOX ROD PRINCIPLE “ Dissociate two dissimilar objects by breaking the fusion to find out the PHORIA for distance”

5. MADDOX ROD PROCEDURE Room illumination dim. Can be done at 3m and 6m. Maddox rod is placed in RE. Provide spot of light target at distance. RE views a LINE image, while LE views a SPOT OF LIGHT.

6. MADDOX ROD HORIZONTAL DISTANCE PHORIA Uncrossed (Esophoria) Crossed (Exophoria) VERTICAL DISTANCE PHORIA (Hyperphoria) (Hypophoria)

7. A =Esophoria B=Exophoria C=Hypophoria D=Hyperphoria E=Orthophoria

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

9. MADDOX WING PRINCIPLE “To dissociate two dissimilar images of near phoria”

10. MADDOX WING PROCEDURE It is quantitative and subjective method The right eye sees red and white arrow each of which point to scale with number seen by the left eye The room should be brightly illuminated and patient should be optically correected The examiner instructs the pateint to hold the maddox wing and identify the number that the white vertical arrow and red horizontal arrow .

11. REFRENCES Elkington Basic opthalmology Renu jogi

12. THANKYOU