DUOCHROME TEST || BICHROME TEST|| RED-GREEN TEST||

DUOCHROME TEST || BICHROME TEST|| RED-GREEN TEST|| REFRACTION SERIES - Dr AMRIT
This video talks about the important concepts of the duochrome test.
it explains the important concept of "over plus and under minus" and why is it done in the spherical endpoint verification. It explains what is meant by chromatic aberration and how is it used in duochrome testing. What is the chromatic interval of a duochrome chart? why does patient prefers a particular colour chart in duochrome testing?
what are the steps of the duochrome testing?
what are the limitations ? whether it can be done in colorblind patients or not ?
it expains the MNEMONIC ; RAM-GAP in duochrome testing.
#refraction
#dramrit
#insightophthalmology
||Links||
||Types of astigmatism ||
• ASTIGMATISM || REGULAR...
||Understanding astigmatic prescription||
• Decoding Your Astigmat...
||Sturms conoid and applications||
• STURMS CONOID || APPLI...
||Spherical equivalent ||
• SPHERICAL EQUIVALENT O...
|| Astigmatic DIAL ||
• ASTIGMATIC DIAL TEST |...
||TIMESTAMPS||
00:00 verifying the spherical endpoint
01:20 why least minus and most plus?
06:41 why leave myopic rather than hypermetropic?
07:44 chromatic aberration
10:55Which color is preffered and why?
12:41 What is duochrome chart?
13:13 What is chromatic interval?
15:27 Steps of duochrome test?
21:19 RAM-GAP mnemonic
23:50 Limitation
24:24 Can it be done in colorblind?

[@Preetreceipes]

Thank you doctor.

[@user-rj2zn6lj9o]

Wonderful video

[@sukhdevsingh-in5ee]

Ever excellent explanation 👍

[@bouviram5497]

Lovely explanation

[@joeraja14]

Thanks for explaining very clearly mam

[@bapuraoskanthi9037]

Thank you for clearer explanation Mam 👍

[@shaukatali739]

Very helpful, thank you ma'am 👍

[@aysennnalar4854]

🎉

[@nawazishkhan5831]

Thank you

[@deepresearchersbynk]

Nice mam

[@dep5158]

If you fog the eye before duochrome then it means the patient will always prefer the red. This is because in both myopes and hyperopes, the image will be moved forward which will make the red closer to the retina. This way, your patient will never report green clearer than the red to start with.
Now, does this not mean there's no need to fog the patient before starting the duochrome?

[@ragaakamal6728]

You are great very nice explanation ❤

[@InsightOphthalmology]

Thank you

[@Odank]

Thank you for making this video tutorial. Can this be used on post refractive surgery (LASIK, PRK, etc) eyes to determine over or under correction or not really?

[@InsightOphthalmology]

Glad you liked it ! Yes it can be used

[@thulasikumar8870]

Duochrome not use /visual acuity 6/12 (with correction and without correction madam)

[@sreeparnamistry6416]

Mam please make a video on FRIEND TEST....I COULDN'T FIND this topic..

[@InsightOphthalmology]

Hi, friend test is very similar to Duo Chrome test. Once you understand it, understanding friend test becomes very easy.

[@prashantkuril.6698]

Duchrom test should do only for spherical patient or
spherocylindrical patient.

[@InsightOphthalmology]

Usually done for spherical errors

[@syarafinamalek2668]

285

[@InsightOphthalmology]

What are these numbers syarafina?