Maddox Rod Test- A Complete Tutorial

[@waseemakram3417]

Very much useful to find out strabismus thank you

[@optometry-with-samir]

▪️Stay with us and share with your friends. Thank you, Samir Sutradhar.

[@malikmomani]

But it is explained in Kanski the other way around if it’s is uncrossed the it’s exo

[@moomimehr]

Sir in this test which eye that can we taken to test ,the eye we placing maddox rod or the white light fixating eye?

[@optometry-with-samir]

You can place Maddox rod in any eye. ▪️If you place Maddox Rod in fixating eye then you will compare white light with red line. ▪️If you place Maddox Rod in Deviated eye then you will compare red line with white light. Generally we place Maddox Rod in fixating Eye.

[@jali7776]

Thank you sir for this video. As we can see in this vid, 3:56 it is left exotropia So,if we want to fix it we need to give base out on left eye right?

[@optometry-with-samir]

For Measuring of Amount of Deviation we use Apex towards deviation and For therapy purposes we use Base towards Deviation.

[@jali7776]

@@optometry-with-samir so in this example 3:56 (LEFT exotropia), if we want to correct it, we need to give Base out on left eye right?

[@optometry-with-samir]

@@jali7776 For correction, Iike if patient is seeing diplopia then we have to give Base In prism so that rays fall in fovea and image becomes single.

[@jali7776]

@@optometry-with-samir on left eye ?

[@optometry-with-samir]

@@jali7776 yeah

[@ilariaachillea]

thank you for this video! i have a question: if we put maddox rod on the right eye and the patient risponse is ' white light on the left of the red line' could it mean that the right eye is deviated (esotropia)? or only the left eye?

[@optometry-with-samir]

@@ilariaachillea Watch the video again, You have to identify fixating eye first so that you can compare.

[@swatibhadauriya7965]

Excellent explanation ❤

[@optometry-with-samir]

Stay with us and share with your friends. Don't forget to download our app "Optometry Notes & MCQs". It's available in Google Play Store. Thank You, Samir Sutradhar.

[@cricket_now218]

Sir, can we use maddox tangent scale and measure amount of deviation. Is that used only in case of distant measurement?

[@optometry-with-samir]

Yeah, We can use Maddox Tangent Scale and measure amount of Deviations. Maddox Tangent Scale is available for both distance and near. Stay with us and share with your friends. Don't forget to download our app "Optometry Notes & MCQs". It's available in Google Play Store. Thank You, Samir Sutradhar.

[@rajeshtripura725]

In case of esophoria or exophoria base out prism is used to correct deviation and for exophoria or exotropia ' base in' prism is used. Now my question is what is the power of that prism ?

[@optometry-with-samir]

That identify by Prism Bar Cover Test. In this test a Prism is placed with apex towards deviation then cover test is performed to check the movement of deviated eye. Prism is increased gradually till there is no movement or deviation is present. That gives the amount of Deviation.

[@expressiongirlneha8462]

Thanks u so much sir 🎉

[@optometry-with-samir]

Stay with Smart Optometry and Study Optometry Smartly.

[@cricket_now218]

Sir ,my last question If I'm placing maddox rod in right eye(deviated eye), patient response is vertical line is left side of the patient, so the interpretation is right exotropia. Is that correct?

[@optometry-with-samir]

Try to understand the mechanisms. We compare the image of deviated eye with fixating eye not patients side... If you place the Maddox in deviated eye (right eye), that means red line is the image of deviated eye and point light source is the image of fixating eye (left eye). Now, if patients response is "Red line is left to the point fixation that means right eye image shifted inward, so eye is deviated outward or exotropia. So, you are right.

[@cricket_now218]

Thankyou sir

[@cricket_now218]

Hi sir, You said that maddox rod is placed in front of fixating eye. ie., here fixating eye is normal eye ( not deviated eye) . Is that correct? I'm getting confused..

[@optometry-with-samir]

You can place Maddox rod in any eye. ▪️If you place Maddox Rod in fixating eye then you will compare white light with red line. ▪️If you place Maddox Rod in Deviated eye then you will compare red line with white light. Generally we place Maddox Rod in fixating Eye.

[@cricket_now218]

​@optometry-with-samir Thankyou sir, i got it.

[@optometry-with-samir]

@@cricket_now218 Stay with us and share with your friends. Don't forget to download our app "Optometry Notes & MCQs". It's available in Google Play Store. Thank You, Samir Sutradhar.

[@discoversoil979]

This is wrong while interpretting results.... Please checkk

[@optometry-with-samir]

There is no mistake. Correct yourself. If you still have any doubts you can explain your doubts here.... Watch this video (Cyclopean eye) to understand crossed and uncrossed diplopia. Link: kzbin.info/www/bejne/bJ60hpxsptubias

[@BhuvanaBhuvana-mt1bj]

Why in hyperphoria image is formed below the light

[@optometry-with-samir]

Image formed opposite to the direction of deviation... Watch this video about cyclopean eye to know why image formed opposite to the direction of deviation: kzbin.info/www/bejne/bJ60hpxsptubiassi=-ciXJg2i9q8ty3cN

[@malikmomani]

But I think in kanski it is explained the other way around. If it’s uncrossed then it’s exo

[@optometry-with-samir]

It's Opposite, if eye goes in image will shift out and vice versa. Please go through Cylopean Eye to understand the mechanism. You can this video: kzbin.info/www/bejne/bJ60hpxsptubias Thank you, Samir Sutradhar

[@TheUsmanSajid]

Yes ur right... Exo and eso should b reversed..also hyper and hypertropi

[@saurabhrana6405]

Very good❤

[@optometry-with-samir]

▪️Stay with us and share with your friends. ▪️Don't forget to download our App "Optometry Notes and MCQs ". It's available in Play Store. Thank you, Samir Sutradhar.

[@dibimene9428]

Thanks very usefull

[@optometry-with-samir]

Stay with us and share with your friends. Don't forget to download our app "Optometry Notes & MCQs". It's available in Google Play Store. Thank You, Samir Sutradhar.

[@jibonerkota1245]

Not tropia...this will be phoria.please check your interoperation

[@optometry-with-samir]

In both phoria and tropia image will shift opposite direction of deviation. The difference is, in phoria patient may Fuse the red line and the white light source or reduce gap between red line and white light source with fusional effort where in tropia the gap between red line and white light will be constant. So, it can be tropia or phoria both. You need to do cover test to confirm the diagnosis.

[@medicoinminutes6873]

@@optometry-with-samirnice intelligent one

[@omarkhresat8172]

I think there is Something wrong with the interpretation

[@optometry-with-samir]

Please watch the videos few times to solve your confusion. Still if you won't understand then feel free email us at [e-mail] Or explain your doubts in the comment box. Thank you, Samir Sutradhar.

[@entesarahmed4473]

I think the vertikal deviation is the other way around

[@arthurkorir7846]

wrong

[@optometry-with-samir]

There is no mistake. Correct yourself. If you still have any doubts you can explain your doubts here.... Watch this video (Cyclopean eye) to understand crossed and uncrossed diplopia. Link: kzbin.info/www/bejne/bJ60hpxsptubias